1 - Yes, definetly
2 - Probably stuff like "Death Magic ( one planned category )" and "Hell Magic (may replace death magic according to witch sounds cooler)" and other stuff
3 - Right now about 4 (Baug, Reis, Croft, and Shamus) One is a secret character (shamus)
4 - The reality mirror is a 'replacement' for gods. They died in the games' world long ago, and to replace themselves they left the reality mirror. It watches over us and tries to protect us from evil. but an evil empire under the command of the main bad guy is trying to open the sealed gate to the world where the reality mirror is controlled. cool, yes?
5 - Probably not.