If we get the game back, and it doesn't have character data/account data... well, I'd be a bit upset, but you know, we'd have the game back.
Personally, I wouldn't mind leveling up my characters again (mind you, I only had two level 50s...), but I would miss having some of the costume options from the Veteran Rewards. Mind you, I did 'jump forward' something like 27 months in Veteran rewards in one day....