It WAS super powerful, but I kind of thought that it's supposed to be - given what you have to do to get it, it really shouldn't be a particularly run-of-the-mill kind of ability.
The lack of control is kind of a mixed blessing, imho. Controlling *that* many NPCs made certain battles a bit of a grind. On the other hand, ending up with a friendly ghoul interrupting a shared turn between other characters...is a bit frustrating.
However, I ran into a weird glitch in the Upper City because they were trying to attack
the Nautiloid bombardment sites themselves - running into the middle of the explosion zone to try to swing at something that wasn't there.
I hadn't noticed the inability to dismiss, mainly because I've been working through the endgame sequences the last couple days, but if that's the case...yeah, that's clearly a problem.