What is a "hybrid" for you? A char which uses some synergies from some schools is not a hybrid for me in this game. A hybrid for me above all is a char which focuses on both damages.
The game is not made for "one school" builds in my opinion. There are even very few pure school starting builds (Rogue I guess?). So combining is a goal and not a cheat.
If you combine too many you get problems with your points. Luckily higher level skills need more points in a school, so the cheesy take-all EA builds are nerfed hard.
