Power ranking the card for Wrestlemania 33 (the low tier, which oddly includes three title matches):
13. Smackdown Women's championship scramble thing - I like most of the competitors, but scrambles are not my thing.
12. Andre the Giant Battle Royal - aka the Brauuuuuun show
11. Neville vs Austin Aries - I'd put this higher if it were mid-card instead of pre-show.
10. Enzo/Cass vs Sheamus/Cesaro vs the Club (ladder match) - features my favorite and least favorite tag teams...I can't stand Ezno and Cass, and I love how Sheamus and Cesaro have meshed together. It'll have some fun spots with Cesaro in there for sure.
9. Corbin vs Ambrose - I still like Ambrose, and I think this will be a solid match, but it's a little lacking in drama for me. Fully expect Corbin to win to continue his climb toward the top of the card.
While I would disagree with some of your rankings, i thought I'd piggyback of your list since its already here, and we agree on several things.
13. I really hope there is something planned beyond Naomi here. I mean, did we really get stuck in a 2 month holding pattern for her? Obviously the hope is the anyone is eligible means Asuka shows up and trounces everyone, but if not, I think this may be a good time to put the belt on Natalya. I would say Becky, but these types of multiperson matches tend to favor heels.
12. Braun is a favorite, but I feel like he is nowhere near the lock some think he is. Is Samoa Joe in this? If so, I think he's a better candidate. If not, I think this is Sami Zayn's to win. He's the guy with the brightest future, and the one with an actual story.
11. Sneaky match of the night candidate. I kind of like the idea of Neville winning dirty here, maybe ref doesn't see Aries foot on the rope or something of that ilk.
10. Enzo/Cass were always greatly overrated in NXT, and the haven't improved much since their call up. The Club should 100% take this. Fun Cesaro spot guess: Enzo is pushed off the top of the ladder into an uppercut.
9. I'd probably have this match in the top-5. I think this is Corbin's big showcase. Think they test him out a bit and go 20 minutes here. I also really hope their is a rebound clothesline into an End of Days.
Mid-tier (the drama section):
8. Cena/Nikki vs Miz/Maryse - I like the build up. I like the payoff for Miz's big year. I like the cheesiness that there might be a proposal. This is where the 6 hour long show can breathe a bit and have fun.
7. Nia Jax vs Sasha Banks vs Charlotte Flair vs Bayley - I don't think it'll hold up to last year, but I really like the potential for Charlotte can really shine with this group around her.
6. AJ Styles vs Shane - everyone expects a big spot, and AJ can shine up the rest of the match. If they keep it to 15 minutes instead of 25, it could be a sneaky show stealer.
5. Brock vs Goldberg - I am very interested to see how Brock gets re-established here since Goldberg has dominated him for six months.
4. Owens vs Jericho - KO is going to shine at Mania again. Jericho is a really nice non-Sami Zayn match for him. Get on board, man!
8. This is fair for Cena being in it. Feel like they will at lest try not to bury Miz here. Likely Nikki makes Maryse tap in an STF, or maybe dueling STF's.
7. Agree its unlikely to be as good as last year, Becky>Nia, but I think it could still surprise. Normally I'd say the best story to tell here is Bayley having it won, and then Sasha knocking her out of the ring or something and stealing the win. Though if Sasha turns heel, does Raw even have another female face? With that in mind, I think Bayley retaining makes the most sense.
6. I might even say 10 minutes. This is a match where I think its important that Styles wins by submission. Just really rub it in.
5. If I were writing this match, I'd have Goldberg immediately spear Lesnar, than Jackhammer him, and Brock kick out at 1. That is how I'd re-establish Lesnar. Also, have him win via submission, though I also say that because I miss pre-suplex city, arm-snapper Lesnar.
4. I'd personally have this #2. There is over 6 months of buildup here. Normally, I'm a fan of younger guys getting the big win over the vets, but with the story that has been told here. I think Jericho should win. Idea for a finish: Pop-up powerbomb countered into a Codebreaker. The US belt is kinda below Owens anyway, maybe he could cost Jericho in a title match on Raw, and then beat him back to Fozzy afterwards.
Top-tier (the good stuff)
3. Orton vs Wyatt - This has had a long/strange build, and I love it. Bray Wyatt getting to shine at the top of a Mania card is well deserved. They can just wrestle, and I'd be cool with that...or they can get freaky, and I'd love that too. There's so much wrestling on this show - this is a chance to do something really different.
2. Roman Reigns vs the Undertaker - I am 100% Team Roman on this one. It's time for Taker to step aside...nice that he'll get one last big Mania entrance, but then it's time for Roman to squash the old man...
1. HHH vs Rollins - First...the build has been multiple years and great. I'm also overly excited for this because I think they can throw the kitchen sink at it. Samoa Joe? Sure. Finn Balor gives Rollins an assist? Go for it. I can't think of anything I want to see more on this event than Rollins hitting HHH with a curb stomp and standing over his carcass.
3. I think this could be good, though I still have zero idea how Orton is the face here. I think this match will be like the Ambrose/Corbin match, in that its a showcase for Wyatt to go 20 against a more established star. If we really are finally going to go somewhere with Wyatt, this needs to be a decisive win, nobody on this card needs to win more than Wyatt does. Cool spot idea: Orton is getting destroyed but hits an RKO(out of nowhere!) but it took everything he had, and he can't make a cover for a couple seconds when he finally starts to crawl over, Wyatt does that weird bridge up thing and smiles...BOOM! One Sister Abigail later, and Wyatt retains.
2. I know you are a big Reigns fan, but I'd have this match probably at 6 or so at the highest. This is basically a filler match. There is nothing on the line, and it really doesn't matter who wins at all. If the streak was still going sure, but that ended 3 Mania's ago. I think the best way to go here is Undertaker wins similarly to how he beat Lesnar, low blow and Hell's Gate. Reigns passes out, and when he comes to, he beats the hell out of everyone. Undertaker, refs, security, maybe even send Kane out there to take a Spear or whatever. Something big needs to happen here, and Reigns freaking out after a shady loss is the best thing I can think of, especially with how many shady losses he's had in the last year or so. Have it all come to a head against somebody he respects. The worst thing that can happen is Reigns just winning clean in a decent but instantly forgettable match.
1. 100% agree this is BY FAR the most important match of the night, honestly it should probably main event. This or Wyatt-Orton. I would hate to see Joe or Balor show up here, hopefully Joe will already be in the battle royal. This should go 20+, and absolutely end on a curb stomp. Possibly a Phoenix too. This should feel like nothing else. HHH should bust out a piledriver, or maybe a Tombstone, anything. This should be at an Okada/Omega level of escalation. This feud is the culmination of at least 3, and possibly 5 years of storytelling. This is the match that should make Seth freakin' Rollins the #1 face of WWE.