Agree with most here but a couple of things to reiterate:
Didn't love SMG as Teela (and I'm a huge Buffy fan). I think it was the voice didn't fit and to me, being a voice actor requires a special skill. It's not always transferable from "real" acting. SMG is a master of facial acting, but not voice acting.
Orko and Evil-Lyn was a great dynamic although I don't get why she went with him to his vision place.
Yes Mark Hamill is wonderful, but Skeletor sounded like a less insane Joker to me. Good, but not different.
As a huge fan of the original and who had all the toys (