This is a bit of a weird one but here goes:
I don't know much about studio work, but recordings from Five Leaves Left and Bryter Later must surely have had the violins, bass and bongos etc etc recorded seprately from Nick's voice and guitar (which in some cases have been recorded seperately also) so is it not feasible that these albums could be released Pink Moon-style with just Nick's guitar and voice?
I often think when I listen to certain songs ie Chime of a City Clock, Day is Done, 'Cello Song etc, that it would be really nice to just hear Nick's own work, in the same way as that acoustic version of River Man was on Made to Love Magic - its just interesting to hear a version without accompanyment, some of which was over-bearing and intrusive (in my opinion) on Bryter Later for instance.
Could this be done and should it be done?
if you go back to the original multitrack tapes, it is obviously possible to separate Nick's guitar and vocal tracks, although if both were recorded simultaneosly with the orchestra there might be some bleeding from the strings.
but also, a friend sent me a couple of tracks (Northern Sky and Way To Blue) with only Nick's parts. I went 'whoooaaaahh!'
then he explained he did that isolating the center channel from the surround mixes found on "A Treasury" (SACD). Now that I have the aforementioned cd, and my pc can only read the stereo audio from it, I think he connected his pc to the dvd player recording one track at a time from the surround channels, or something like that, to obtain the isolation.