I have no issue with re-releasing other games. I mean, am I really going to dig out my N64 to play Ocarina of Time....assuming either my cart or the console itself still works?
The real issue with the 3DS isn't the fact that Ocarina of Time is the best game on the system; its that its the ONLY game on the system worth playing.
I would say wait for the 3DS. It looks like a re-design with two joysticks might be on the way at some point.