Wasn't there already a shitload of monk only gear anyhow? More variety in gear sounds good though.
Wizards and Sorcerers, as far as I know, had like 1 decent robe each, quite rare. And 1 more if you were a female sorcerer.
At least I haven't found any more examples yet, besides a few very expensive 10 ressist points to X damage source robes in Dementlieu.
What I'm really missing is somekind of eh.. magical slippers? Footwear that is actually relevant for casters.
I've personally just stuck with the comfortable traveling boots (at least I think it were those) for the 1 point in concentration they offer.