I honestly believe KI is the perfect fighting game. It is simple enough for anyone to be able to play it to some degree, while having a lot of depth if you really dig into it. It also understands that just watching someone combo you is not a fun experience, so they allow you to turn their offense into your offense at the drop of a hat, which makes all fights much more proactive because neither player is scared of getting hit and being locked in an uniterruptible combo.