While I am usually a fan of compromise I think this is only delaying the battle.
Agreed. The battle will probably surface at the next SC nominee, imo.
The only election this will possibly affect is 2006, because I think it will come up again before then. By 2008, unless it's still an issue in 2007, no one will care.
That gives us these candidates that it could potentially affect:
Rep.
Lincoln Chafee
Olympia Snowe
Mike DeWine
Dem.
Ben Nelson
Robert Byrd
Joe Lieberman
By my own personal bets, Snowe, DeWine, Byrd and Lieberman will face no problems in their elections regardless of this, so there's no reason to include them.
That leaves Nelson and Chafee. To those two, I would add two more non-signatores on that list: Santorum and Conrad, as two that could possibly be affected by this issue.