XPH psionics in D20 Modern
Someone was working on converting the XPH rules into d20 modern advanced classes which got me excited about putting together a psionics game. After writing some scenes and working out factions and some backstories I realized that I would want something entirely centered around psychics such that most, if not all, PC's would have a psionic class of some kind.
In light of that, what would be the pitfalls of simply adding the D&D 3.5 XPH (and Complete Psionics) to the Modern library for the game? I already know I would have to edit skills, add a Defense and Reputation progression to each class.