Off the top of my head, here are some players I am having difficulties with ranking:
QB's
D. Anderson -- Tougher schedule for Cleveland this year and he goes into this season as the starter. How will he handle the expectations and, if things start slow for him, will he press a bit with Brady Quinn itching to get a chance?
Delhomme -- Will he be able to bounce back from his injury and be effective? Intriguing pick this year since the team added a bunch of weapons on offense during the off-season. Will the team's apparent efforts to use a power running attack limit his numbers?
Rodgers -- Unlike many other first round QB picks in the past decade, he has actually had the opportunity to develop without being thrown right onto the field. Is he ready? I thought he looked solid v. Dallas but the team's decision to pick Brohm sends up a red flag.
Alex Smith -- May not even be the starter this year but is he is, he may thrive under Martz's system as Warner, and Bulger (and to a lesser extent Kitna) have.
RB's
Grant -- Can he put up decent numbers for an entire year without Favre at the helm?
Earnest Graham -- Career backup, missed mini-camps due to contract dispute. Will he hold out and, even if he doesn't, will his touches be the same as last year with the signing of Warrick Dunn?
J. Jones -- Will get more touches in Seattle this season so his value appears to be higher than last year, but will he do anything with the extra touches and can he stay healthy if given an increased workload? It still doesn't look like he will get goal line carries with Duckett vulturing short yardage carries.
Turner -- No questions about his physical talent, but he didn't land in a great spot. Will get a lot of touches, but most likely will play a majority of the season behind a rookie QB so teams will be able to stack the box. Team may get down early which will cause them to abandon the running game thereby limited Turner's touches.
Den RB's -- Henry and Young will split carries so it is tough to say who should be ranked highest. Henry will get goal line looks most likely but he is already had nagging injuries in mini camp. Both are injury risks and Henry is still a step away from being suspended. Add Torain into the mix and the backfield could be a three headed monster during the season. No telling who will emerge.
WR's
Andre Johnson -- When he was able to play last year, he was lights out. No questioning his physical talent, but he already has knee scoped and I just don't know if I can rank him top 5 as some have.
Welker -- Huge numbers last year just don't know if he will be able to match, and, if not, I am still trying to assess how much the drop off is going to be.
Jennings -- Like Grant, I just don't know how he will perform with Favre retired.
Roy Williams -- Lions are moving away from Martz's scheme and going to a power running game. Means less receptions for Roy. How much though? Also, does Drew Stanton get on the field at some later this year (most notably when teams are making their push for the playoffs and need Roy to put up good numbers).
TE's
Cooley -- Saunders is gone. I just have a sense his numbers take a hit especially with the other weapons they acquired this offseason. Still don't know how far I drop him though. Odds are he is picked before I try to get him anyway since others will have him ranked higher than I.
V. Davis -- Still trying to figure out how he will be utilized in Martz's system. TE's haven't been historically used by him but he has also never had a TE of Davis' talent level on his other teams.