I believe it is. For now. I don't know about ToME 3, but I feel expanding the map resolution would be a good thing (tm).
Why ?
- Allow more... wilderness !
- Allow more towns (Tharbad, Edoras, Grey Havens, etc.) without overfilling the map.
- Allow more dungeons and special places (Haradwaith - the sandworn lair should be in Harad!, Barad-dur, Osgiliath, Weathertop, Blue mountains, etc).
- Add special features such as roads between important towns : thus allowing low-clvl characters to go from town to town without (or rather less chances) of getting ambushed in the wild. (in the mean time, why not allow boat trips from coastal towns to other coastal towns ?) (ok ok... why am I not rich to pay DarkGod/other_fellow for ToME development ?

If you wonder, the actual map is available. (SPOILER ! *Don't* go there if you don't want to get spoiled http://www.t-o-m-e.net/wilderness-2.2.png )