I'm very enthusiastic about your LD-DVD-transfers and would like to point out, that there IS an official release of Count Prasil on DVD!
Released in the Czech Republic you can order it here:
http://www.dvdr.cz/zbozi_video.php?lang=en&shop=vi&id_zbozi=9367&pgnum=0&sfind=nazev%5DKdy%BE+Burian+pr%E1%B9il
As for other Criterion LD -> DVD projects, a friend of mine is working on the Hughes Brothers' Dead Presidents and Menace II Society to be transferred to DVD! I will ask him if he could make these available as torrents, if you don't mind.
Regards.