Nice first post! Welcome to the crowd.
I do like Ayers as a first rounder. I would love to take him if he makes it to the Chiefs. I question if they'll go OLB in the first round though with Sheffield and Studebaker in the works. Ayers is certainly a "freak" athlete that would be a nice addition to the defense.
Powell would be a very solid NT that could develop and most likely split time at NT from the get go. Definitely great to have a fresh guy in there at NT that can take on multiple linemen.
I like Moffit and Clay too (being from WI and having watched them play a lot). Moffit would provide some much needed depth at guard and could definitely develop into an everyday starter.
Totally agree on Tamba, he needs to be resigned. Dennis Dixon is an interesting QB name. Didn't realize he was a FA, would love to have him as a backup.