It could help KOF for sure, but I slightly fear where it could hurt too. Not sure if it was Tekken 6 or another fighter where it was there for a season and then gone. KOF is still trying to get a good foothold in the US, though it's finally acknowledged. Might be paranoia, but I'm not sure I'd like MLG to have an indirect say in whether it's a good enough game for something as big as MLG.
I'm honestly surprised KOF caught the MLG's attention to begin with. If it's about more than just streams, then cool. Personally I wanted to see how far the community could take this game with EVO and such before it got caught up in the MLG thing.
Not gonna lie though, if Kane, Reynald, Mr. KOF, Dune, No. 17, or any of the guys could make real money off of it, then that's one positive that might outweigh a lot of negatives.