Only problem with another wood coaster is that Mean Streak is right there, gotta spread them out. I think that popularity on the mean streak will be up when this new coaster is done, mostly cause of the crowds that will be brought there. I think that TTD had the same effect on the corkscrew, when I was there last weekend, corkscrew had longer lines (25-30min) than the mean streak (15min).
As far as what the new coaster really is, maybe it's an LIM, Mega Looping, Aqua Trax... Who knows...