You might want to see the other playable Schala mod around here -- people had quite a few ideas about her skillsets, sprites, etc. You might completely disagree with everything, but it's worth a look.
Since Schala is awesome, this is absolutely amazing and yes, you rock, but a problem I have is that it would be pretty hard for Schala to fight in those flowing robes... :/ You can't really run very well in something like that, could you? Of course, she could just levitate or something, but...
Excellent job nonetheless. Also, getting her after the Dream Devourer is practical, though not practical at the same time... You've already beaten the hardest boss in the game, so you wouldn't really need her.
But bah, ignore my nitpicking. This is really cool, keep up the good work! :D Maybe RoxSilverFox (the author of the other project) could tell you some of his ideas or something...