Rather than create a new module, I'd like to see the UUID modules merge and do the right thing. A lot off the time, authors are happy to do such a thing.

Failing that, choose the module name you wish either of these modules had, but don't let on that it's a wrapper. The users of the module (as opposed to the people who will look under the hood) don't care if it's a wrapper: they care about what it does for them. Make it so they use the same interface no matter which backend they have to use.

I don't think a generic wrapper to select different backends will be very useful for other situations. The logic and rules for selecting the modules will be too specialized, I think, and that's the part that does most of the work. People will want to program that part themselves to fit their situation.

Good luck :)