I agree with @jrburke that the naming should be consistent with the relative file paths.

I also want to bring up that I think the Widget Factory should be exported as a **named** module. Lot's of jQuery plugins authors use the Widget Factory to construct their plugins and need a way to natively provide full AMD support so that users do not have to use the `shim` configuration.  I think all of the other jQueryUI files though, besides the Widget Factory, should be **anonymous** modules.