I think most MK fans would say that Marc's multiple personalities are what separates him as a character and that the best work done with MK presents him as having more going on than just a cool costume. Yes, that costume is very cool but there's more to MK than that. Getting him right is not easy and you can come at him from many different angles but making him more basic doesn't seem to be a fruitful way to bring out the best in him.