The purpose of getting prints would be working towards an HD master. The X0 project is likely to go as far as possible with an SD version, and the LDs are a decent source for that. My guess is that their results will be so good that there would be no point in spending the time and money it would take on trying to get a new transfer for SD. But the limitations of the LDs will be clearer when compared with forthcoming HD formats.

Yes, it will be hard to get an HD telecine done - but not impossible. Worth considering though is that any one print (or trilogy collection) is not going to be perfect. It will have splices and color issues that won't make an acceptable master on its own. Therefore you'll need to get two or three prints of each movie to make a complete master. Again this can be done - but at what price? A more realistic approach might be to try to arrange to loan prints from a number of collectors who are interested in preservation if and when the telecine connection is made.