I was commenting on NFL value, but fantasy value, I'd argue Howard as a top-4 pick. He's the best TE prospect to come out since...Vernon Davis? Kellen Winslow? Before anyone says, "those guys struggled out of the gate" they had very unfortunate circumstances. Winslow basically missed his first 2 years to injury, and was instantly a top-5 TE his first healthy season, and Davis was stuck in an abysmal offense on some truly awful teams, in a less pass heavy era. I'd rather have Howard than Olsen or Walker going forward, I think his upside is being as good as anyone short of Gronk for years to come, his floor is being Zach Ertz, who has been a decent TE1.
I also think Engram is crazy overrated right now. He's my #4 TE, and a great deal behind Howard or Njoku, regardless of landing spot. I think he and Everett are pretty close, but I like Everett slightly more. My worry with Engram is that he's more in the Julius Thomas/Coby Fleener mold of basically being a pick your spot guy, rather than a consistent part of the offense.