First off, Mortal Kombat had the dopest voices, settings, and characters for its time. Bar none. Scorpion > Ryu ANYDAY. Plus, who didn't laugh when Lu Kang pulled off his bicycle kick? Who didn't cheer when Rayden electrocuted you to pieces?
Secondly, sure the fighting system was a little broke, but that doesn't matter since you can still be the **** at it and face off with your friends for some hilarious times. The way to get around the "broken" system, is to not fall into traps.
Thirdly, now-a-days SF sucks just as bad as MK.