But there really has only ever been one other wood coaster of comparable size and stature: American Eagle. Colossus is frickin' huge.
I get that Colossus is iconic for MM, but the ride isn't all that popular any more, as evidenced by all the single-side, single-train operations it gets. For it to stay around, it needs to deliver ROI, and right now, I'd suspect that SFI isn't happy with what they're getting.
If you don't want to see it eventually bulldozed for expansion room for Hurricane Harbor, they are going to need to update it in some form. Given SFI's current penchant for crazy/intense RMC projects, I'd bet that the possibility of a drastic modification is pretty significant.