Haha. Honestly, nostalgia aside, MK4 really wasn't a very good game. It did introduce a few interesting characters (and I hope we see more of them in MKX) but it pales to MK II or III. Goro's running and jumping, Shinnok being shit, the random weapons, meh... I think Boon's criticism of it over the years has been quite fair.
Bear in mind he'll have variations and (presumably) alt. costumes, so they can give him some visual and gameplay variety.
Judging but what we have seen on his reveal, he looked like his human early appearances with the mask.
I think for MK he would be better already resurrected, when he got abilities beyond human, and some of his kills are fatalities without a doubt.