I say bundle the Rev with a Zelda:TP special edition, that will make all the people that bought the original upgrade to the Rev immediately, and all of those that wanted to play the original but waiting for it to hit a bargain price, to hopefully just pony up the cash and get the upgrade. Not to mention those that either never owned or sold off their cubes that were planning on (re)buying one(specifically for this game) to just pick up a Rev instead. That would make me want to buy NOW moreso than a free download from some system that I haven't missed for 5, 10 or 15 years.
Granted that there are games I never played from past systems that I have always wanted to play(i.e. SMRPG - snes), but if I have done without for this long, its not gonna bother me if I never play it either. Its not gonna be the talk of the year, its not gonna come up in casual convo, and since it was sooo long ago that I never played it, I'm not gonna remember(or care about) what I'm missing.