This is actually the thing that struck me as one of the most obvious things to fix. Monster summoning was one of the first things I checked out and I was really disappointed and mystifed that it wasn't changed. I was stunned that this wasn't a part of the book that struck other people as egregiously bad. Am I really alone in this?
I still have to, on the fly, apply a template to a stat block out of the monster manual to use this spell? And the templates are 50% celestial and 50% fiendish with no rhyme or reason? So summoning ignores the law/chaos axis of alignment, what with the free will and compelling service aspects? And the templates are pretty useless anyways?