Well, personally I really hated Energy managment in the original game and nearly in all masteries. Because there was none! It became obsolete. I have about 30 characters (60-85 levels) and spent 1150 hours in this game. Only one and a half character have ever even noticed any nuance in Energy managment (regeneration and reduction) and it was only around first 20 levels. After that I’ve never experienced any problems with Energy. Is it balanced? Hell, no! It’s just redundant. It doesn’t add any challenge to the game (as well, as Constitution stat, by the way). It’s just there, that’s all.
I’ve played Mystic a bit, and such dependancy upon Energy is way more interesting then usual Energy cost of skills. As a balance factor his exlusive damage aura is potentially way to powerfull. Interesting mastery all in all.
P.S. Sorry for my English, I’m not a native speaker.
Not even a speaker))))) I hope you get the idea.