[Phantasm]

I personally do not consider new specialties of existing skills to be skill creep, as in many cases the listed specialties have missed certain things that would normally be covered by the underlying skill.

The 3e skill creep gave us such skills as Abacus (the use of a tool for math), Ciphering (counting on your fingers), and Bulldancing (in 4e, this would be a Dancing combined with Acrobatics for dancing with bulls, vaulting over horns and whatnot). 4e has avoided that kind of skill creep, even with all the new skills listed in Imbuements and Psionic Powers, as those are situationally-derived skills for non-muggles.