I guess I am one of the exceptions that I actually enjoy Mean Streak they way it is (but I also like Boss at SFStL lol). It seemed to be running so much better by the end of the year. Not saying I would be against the RMC treatment at all though. I think it could be transformed into an awesome creation if they proceeded with that project. If I had to guess, I would agree with Andy though, that any major project done to Mean Streak would after the anniversary.
As for Gemini, I would hate to see anything drastic changed on it, nor do I see that happening. With the revitalization done to the Gemini Midway, Gemini is still the centerpiece of that area. Its ridership was 5th for coasters last year, and its a fun coaster that most of family can enjoy together. That is the theme of that area, family fun, from Camp Snoopy to Pipe Scream, Monster & LE Eagles.