Picked up Gholston at low cost in my dynasty league. Good run stuffer, good overall tackler from what I have read and racked up the tackles last season. Turns 25 later this year, and should be a free agent next offseason, so even if he doesn't get a full 3 down snap count this year, it could very well be there for him on a new team. If he can have a role of close to 800 snaps and pick his sacks up to 7 or 8 a year he would be a terrific DL2 to depend on weekly.
Right now, I would probably bring him in as depth and just see how it goes...can't remember but I think they either kicked him inside to tackle on 3 down or have talked about possibly doing that this year to keep him on the field. Have to see how it goes, but get him as a backup on your team if you're in 12 or deeper league started 3 or more. That's a good start.
McCoy is who he is at this point, but supporting help around should make things a little better and I believe he's now 2 years removed from a major injury so that's good.
Ayers was brought in to be a starter and make an impact on the rush so he could be an immediate DL3 on draft day that could out perform.
All and all I like the Bucs lineman, if you are getting them at a respectable value and not overpaying. McCoy in DT start leagues is a starter of course and has more value there but that should go without saying.
Hope that helps.