I'm afraid I cannot offer much technical advice - alas, I even passed on a great chance to buy a professional LD-player for a nice price, when I got my first collection of used laserdiscs. But then again, that was back in 1994.
Until very recently I considered this whole business of ld-transfers a rather hopeless effort - that was, until I had the chance to see some of citizen's, moth3r's and especially ocpmovies' LD-transfers!
It may be a good idea to ask those people for their advice (or even help). And since this should be a combined effort those people could teach some of us how to do the transfers themselves. The more who know how to do it, the better.
There are many more interesting discs out there that deserve preservation (check out some of the Japanese or European LDs that were released) and the Criterion LDs may only be the beginning of a much larger project!
Well, let us see, what we can do!
Best regards,
zar1967.