im one of those online: let me explain...
im going through a character crisis, and lets be honest. we know all the characters by now.. and its boring playing with the same character. esp. if you are boding them.
also, i go to local tournaments biweekly, and i try to test my matchups every now and then against people i dont know.
I use Mileena right now with most matchups, but every so often i use Lao, Erron, Shinnok, Cassie for different matchups.
and youd probably go nuts playing me, cuz online is a joke to me, so i normally random select every match. just to keep it interesting. lol if reversals, pokes and every basic function is stripped away due to one sided tsunami that is my online MKX experience(wading through water is hard to overcome) i must use different characters just to keep it fresh