Indeed, the holy grail of fan preservation would be a scan of a 35mm print, ideally one of the very rare technicolor prints.

The problems, as outlined in the linked thread are that you first have to find one of these prints in decent condition with an owner willing to scan it.

The next step would be finding someone willing to do the scan. While DIY solutions can work, you likely will run into problems down the line whether it be sync issues or framing issues, or physical issues with the film itself that a professional post house can deal with.

There's a local community college near where I live that recently acquired a 2k DI scanner, and if someone had a print, I'm curious if we'd be able to pull some strings. Since they aren't a commercial post house, they might have less red tape to deal with, and if the right person was asked, who knows. Just throwing that out there.

BTW: there is a someone who may have already done a high quality scan of a 35mm print. Mike Verta recently posted this drool inducing still on his forum:

http://www.mikeverta.com/Posts/SW_SP_R1.001658.png

That appears to be nearing 4k resolution and has outstanding detail.