Arma Arcanum - ridiculously overpowered, and unnecessary imo. Magic resistance is already too easy to stack, and turning my warrior's 70% chance to block physical attacks into 70% chance to block ALL SPELLS would be ridiculous. I want to like it, but it just doesn't work imo.

Go for the Throat - I like it. Making big numbers even bigger is satisfying, and it encourages non-rangers to put some points into Perception and/or stack crit chance.

Resolute Technique - worthless on easy and medium, amazing on hard difficulty. Not a fan, since it makes certain spells and effects obsolete.

Macromanager - I like it. Clever and thematically appropriate. I will say, though, that I noticed myself using summons less and less as the game went on. Probably an effect of the difficulty curve.