Here are a bunch I would like to see (not in order):
1) Harpring - I think of him as similar to Crowder but with better offensive game, better rebounding, and more of a natural PF.
2) Ron Boone - This is kind of cheating, but he never made the NBA all-star team (only ABA). Dude is a stud and classy, so really this is just more of a shout out.
3) Wes Matthews - Kind of like an upgraded O'Neale.
4) Enes Kanter - If we are looking for a C that can boost the rebounding and bench unit offense this could be a great fit.
5) Favors - Duh
6) Al Jefferson - Can't believe I didn't remember him earlier.