09-18-2014, 09:56 AM
There's prolly a lot of reasons for the prominance of the WC in the d20 line, and some of it may have to do with meta theme of the 21st century of shadowy government control. But I think at heart it is Arneson's old school response to 3e's sorceror class. The OD&D wizard (and sage, and assassin) are expected to be members of a guild or cabal. The idea that "hey, here is this whole new class that uses wild magic..." is going to seem inimical to that traditional order.