I just maxed out my first ever epic destiny. I'm a pure fighter and maxed Dreadnought. As I'm still leveling up in epic levels, I'd like to open another destiny or 2 before I hit the level cap. My main question is, if I select a destiny, say GMoF do I get the ability to use KI? Or if I go into a destiny that gives mana and has abilities that require mana, do I actually get a mana pool. Or are all of those destinies basically pointless since I can't use half of their features. Same goes for sneak attack etc etc. Am I kind of borked on epic destinies because I focused on being a fighter?