As far as the free agent signings:
Coleman vs Needham will be a battle and I expect Coleman to win. I don't see Holland being drafted to play nickel. He will be our FS. If he can beat out McCain immediately maybe McCain is in play at nickel but I think he stays at FS as a backup.
Fuller, McKinney, Skura, Sanders, and Palardy should all be starters.
Brown and Doaks should be the short yardage backs.
For the draft picks:
Waddle, Phillips, and Eichenberg should all play significant minutes if not be outright starters. Holland has a lot of potential but he needs to learn the playbook and how to call the defense. That is a tall order for a rookie. TE's have a tough transition to the NFL but I think Long replaces Smythe in a hurry (and maybe jumps Sheehan on depth chart). He is a pretty solid traditional type TE from a good program.
P.S. Could we please stop with this nonsense that Iggy is a slot CB and Grant is a slot WR?