for example suppose we increased detail by using magic to 3d level.would that makes nemesis any better?
No. It would make it worse.
But really, you're clearly missing the point, as the above quote proves. No one is talking about adding
extra detail, through magic or any other means. We're talking about preserving the detail that's already there but you can't see because the transfer isn't good enough.
We're talking about getting a transfer as close to the original film quality as possible.
Adding 3D details would be altering the film; we're talking about preserving the film.