They are probably balancing for endgame.

I don't play the game but it is very likely at endgame with all spells unlocked the best strategy will be to sync AoE nukes on clumps using a top notch target caller just like DF1.

Warrior sounds really OP though, can you have multiple characters per account now in DF2 or is it 1 like the first. Was thinking people just have a warrior with plate alt to start the game and keep 'force strength' high while working on endgame character that balances out with proper stats / unlocks.