What we're looking for is a pipe-dream, there's a better chance of Richard Dawkins converting to Christianity than of the OOT ever getting properly restored.
It will happen, eventually. It may be 25, 50, 70 years from now, but it will happen. Look at how Metropolis was recently put back together after existing for 83 years in a hacked-up form.
The current fan-restorations might even be used as a guide for these future restorationists on how to put the film back together.