MAMA didn't originally snub SM artists. It was basically a 1ish year thing that's over now. SM Artists did plenty there as near back as 2008, with DBSK's "My Addiction" showcase. Keep it cute gurls.
MAMA is always really good. I'd say it goes that way since it's cable rather than public broadcast. I can't wait for what might happen this year - probably gonna involve 2ne1. But I bet SuJu will do something with SNSD too. Either way I'm ready.