I love the idea of Thomas. He would fit alongside Tim similar to the way Horry did. Thomas isn't as smart a player as Horry was, but he's way more athletic - capable of guarding both the 3 and the 4 spot. And playing with Tim makes everybody smarter.
Obviously Thomas doesn't give us the three-ball like Horry, but his sheer athleticism on the offensive end would be a welcomed site.
All that said, I'd much rather keep Dice and ship out Bonner, Finley and whoever. I'd rather keep Mason, but if he's on the way out, so be it.