12 APs for a series of 6 second clickies with long cooldowns is useless garbage.
It really is, only one worth buying at all is the one for Improved Evasion and that's arguable. I'm sure I could find a better place to spend 12 AP in another tree.
Quick and dirty solution: Lower them to 1 AP each instead of two. 1000 cuts for 6 seconds every minute MIGHT be worth 6 AP, it sure as hell ain't worth 12.
Better solution: Redesign entirely, but there probably isn't time for that so go with the quick and dirty.