If you remap V2 to be the same as V3, won't you lose the ability to use your existing V2 textures? So, to answer your question, no, I probably wouldn't pay $10 for a remapped version of V2.

You would add not lose... you could use your standard V2 with standard V2 maps or the new remapped V2 with unimesh maps. You could try one of David's freestuff remaps to see how it works...