There's one thing I'd find awesome: if they take All Good Things and refilm the future scenes, because all of the actors have the right age for that. And for the scenes with ageless future Data, they'd need to keep the original Data footage and insert the new footage of the older actors (like in the DS9 Tribble episode). I'd pay real money to see this.
I suppose that would be neat, but what would the purpose be other than for fanwank? It's established that none of those events happened anyway, so what's the point? Not to mention that you'd now have to pay for five actors' salaries on top of the remastering budget (And even if Sir Patrick wanted to do something like this...which I'm sure he doesn't...his asking price would no doubt be pretty high. And all this just to see older and fatter versions of our heroes?)
Besides, the 'true' future likely won't have the characters looking like that anyway. People live longer in TNG's time. Thus they must age slower. They probably would look very much the same even 25 years later.