I agree in a way. I find that spells - especially destruction if you're a destruction mage - cost way too much. An expert level conjuration spell costs what, 70 or so magicka per shot single hand? At that level of destruction, the enemies have leveled up enough that they take 6+ shots to kill. After 3 or 4 you're pretty much out of mana, and only one enemy has been taken down, if you're fighting multiple enemies you're screwed. I found that 0 magicka is way too overpowered, especially with the dual wield staggering perk. I changed my magicka reduction to about 88%. This way I can cast 15 or more expert level destruction spells, take out 2 or 3 medium strength enemies before I'm out of magicka. In fights against tougher enemies, you actually run out of magicka and I just find it more fun than running out after 4 or 5 casts. And I've stopped dual wielding, because nothing can ever hit you that way