I think the reason you're getting so little PEACH, TravelLog, is because this is such a novel concept. There's pretty much nothing like it in 3.5, so no one has any precedents to base any judgment off of, much like a court case where you can't justify suggesting any changes or saying whether something is unconstitutional if it's never been brought up in court before.

That said, I really like the parity of power ability. However, I'm not sure that you should let eclectic learning give you anything. I mean, it doesn't make much sense for an arbiter to start tossing around fireballs, or suddenly raise deading everything.

Advanced Learning always keeps a shared theme with the class. I personally don't agree with the Eclectic Learning ability of the warmage at all and I ban it from my tables because it doesn't make any sense.