Living in Ann Arbor and working in Detroit, I say let 'em all stay in Motown. But if you're interested in my $0.02:
Andre' Goodman CB: Marginal at best...not someone I'd use on a regular basis
Bracy Walker S: Backup at best
Brock Gutierrez C: Nope. Detroit O-line worse than the Bills'. He can stay.
Earl Holmes LB: Unimpressive.
Jared DeVries DE: Unimpressed by him too.
Jeff Backus OT: WAAAY over-rated, gives up way too many sacks. Too slow to play in the NFL.
Jeff Garcia QB: Nope--he's a backstabber (but his girlfriend might be worth it--she calls local radio stations to defend him, and she's an ex-playboy bunny I believe)
Kalimba Edwards DE: Ok, probably an upgrade, but not a "franchise" type free agent.
Kevin Johnson WR: Nope--can't beat out any of the 3 rookies in Detroit. Just a journeyman.
Kyle Kosier OG: Nope
Nate Wayne LB: Nope
Paul Smith FB: Nope
R.W. McQuarters CB: Nope.
Shawn Bryson RB: No way.
Troy Edwards WR: Nope
Tyrone Hopson OG: Nope
Vernon Fox S: Nope
Wali Rainer LB: Nope
Obviously, the end of that list is full of backups and journeymen.
Bottom line: Jauron better not pull from Detriot. They're awful. Best of the lot is Garcia's girlfriend.