honestly no one should care about how "cool" or "not cool" replays would be with ghost dismemberments, if anything it would help free play a lot. it would make uke more like a beat up doll like he already is, considering this is a fighting game and freeplay is basically singleplayer without someone else fighting back
it would help new players learn how to dismember better, where to kick what force to use etc, dont think i would be the only person to learn what joints do or how to move in general from fucking around in freeplay
imo if you want to not have a ghost that actually display dismemberments which i already think it should it should have an option to toggle off or on, so you and sit there and feel proud about punching and kicking balls really well in a free turn base fighting game
about multiplayer that shouldnt be considered an option, probably pointless because most players dont stand still and let you beat them up easily like uke does
or, if all the replay making turds are going to whine about not having something to be proud of making to show off their awesome skills they should have a real time ghost dismemberment option in the fight school, because this would still be great for new players and not replay making warriors