There's no doubt they all have their stock phrases; even the mellifluous P.J. Wong tends to attribute every mistake to "loss of concentration," but I do want a commentator to have a pleasant and not annoying voice, and to not talk all the time.
You know who I actually liked from the past? Someone who, like Terry Gannon, never had anything to do with skating other than sportscasting but took the time to do his homework and learn some good things to say? Jim McKay. Honestly, I think at least a few times he was in the booth with Dick, and definitely with Peggy, and I usually found his comments the best. I think maybe I've said this in another thread, but I swear there were a few times when he'd explain a jump and say "watch for a back outside edge" or whatever. Basic stuff to a skater but that's the kind of stuff that I think is informative to a non-skater, not obvious things like "tired legs" vs. "fresh legs."
No commentator is perfect, but again, with declining ratings for skating overall in the US, why NOT try something different, starting with a new broadcast team?