My 3.0 character, a psy warior used talents a lot : No more talents in the XPH.
I was often using two psionic feats simultaneously : it's no impossible with the XPH.
I used mindblast, to be able to deal with numerous monsters despite my low AC and and low HP : no more mindblast for psywarriors.
It was a character based upon a "wuxia" flavor : tumble, jump, move, spring attack... : no more tumble nor balance for psywarriors.
Las but not least, my second lowest ability (after constitution) was wisdom : it's now the primary ability for PW.
I'm quiet sure there are other things nerfing my character, but I don't have the book, AND I WON'T BUY IT !