I want to play too!
Via WWE release:
Lance Cade - I really think WWE will keep this guy around at least until '08.
Nick "Eugene" Dinsmore - I hope so
Shelton Benjamin - With the reformation of TWGTT, I can see Benjamin and Haas feuding with the likes of Cryme Time of jumping to SD to face London & Kendrick
Jamie Knoble - Seems inevitable that he's released again, doesn't it?
Matt Striker - Definitely, he was already "banished" to ECW, and word on the street is he's not well liked there either
Rene Dupree - he never really found his place in WWE did he?
Sandman - no, TNA didn't take him before, even if WWE lets him go, I doubt they take him now
Sabu - I hope not. Sabu continues to piss off bookers, and may be banished to the indy circuit after WWE releases him
Via contract ending/general unhappiness:
RVD - This could be the big one, unless WWE does something soon, RVD joins Angle & Christian as TNA's biggest defections
Paul Heyman - I honestly think he'll resurface on WWE television again at some point. I think McMahon views Heyman as sort of his dumb younger relative that he looks out for for some reason, despite the fact he keeps failing. Like Baxter Stockman to Shredder.
Chris Benoit (the longest shot, by far) - As other have said, pry not happening. Didn't Benoit just re-up with the WWE anyhow? He'll retire in WWE, although I doubt he ever gets another title run.
Hey, where's the Con-man? He'll probably end up in TNA sooner than later too.
Will be released but not picked up by TNA:
Vito - I think Vince likes guys that wear dresses too much. However, IF Vito goes, I think TNA would pick him up.
Sylvain - With Dupree, TNA might be wise to pick up Sylvain, and oh I don't know keep them as a tag team? Obviously they needed more time.
Shannon Moore - He basically screwed TNA once, and I doubt they want him back.
Now, of course, this list is, with few exceptions (RVD/Benoit/Heyman), dependent upon TNA getting a two hour show, which I believe they will sooner than later.
Now, as for who will leave TNA for the WWE:
Abyss - That'd be crushing to TNA, and with his recent title run, I think he'll stick around a little longer.
Team 3D - I doubt WWE wants anything to do with these two again.
James Gang (long shot on this end) - See above. Especially after what they said about the H's.
Elix Skipper - Didn't WWE release him once before? Back after the WCW buyout? He won't be back IMO.
Who TNA will drop and not get picked up by WWE:
A1 - I must agree.
Serotonin (Kazarian, Matt Bentley, and Johnny Devine) - again I agree.
Ron "The Truth" Killings - There were rumors he was headed back to WWE awhile ago, and that didn't happen. I don't know if that means WWE doesn't have an interest anymore, or if TNA just found a way to shut him up. I'm 50/50 on this guy wrestling for WWE again.
The Naturals - I kind of think this is the type of tag team that WWE might get, who can tell though.
How about AMW? I thought there were some problems with them already, maybe they'll end up in WWE, because they're definitely the type of guys WWE would sign.