I made a map using the Ultima 7 Black Gate map, 289 provinces... came out pretty good I think. Added special locations for magic sites (Dungeons, shrines, Bucaneer's Den, etc.) and added moongates to make for an interesting play.
Testing it now locally with a few friends, but if there is some interest and someone would like to host the map I'll send them the files. Looking at a 12-16MB .tga as of right now.
Yes I'm aware of all the good user contributed content. I've played it all plenty of times
. Something new, even if not exactly new, should be fun for a little while...