whats wrong with cooldowns that prevent using uber-spells more than once in a regular fight but let us use such spells in every fight? if there is a one-shot spell, nerf the spell but do not include a dump, silly and foolish resource system which nobody really needs.
Well, there is not so much wrong with this system. However, there are some situations in which such a system could be abused or make the game far too easy. Let us imagine that we have a big dungeon with lots of enemies, so that the frequency of encounters is very high. Now, let us also say that in each encounter we have to fight just against a few skeletons, but we must fight very often. So, if we know a very powerful spell, there is nothing which would prevent us from casting it in every single fight killing all the enemies with just one blow. And we would be able to use this spell really in each and every fight which would render the whole dungeon just trivial. Now, some players could of course enjoy such an over-powered character but some other players also like challenge and would like some limitations for such powerful spells (also between the fights). If D:OS had a real-time combat, this could be limited by means of mana or so. Here, we were just discussing some ideas how some kind of the limitation system between the fights could be implemented into the turn-based system.
