M&M IX got very bad reviews when it came out because of:
a) outdated graphics
many patches after, most game breaking bugs (all?) are covered, I'd play it, most definitely.
c) obviously unfinished locales.
d) confined overworld maps, as much as Lithtech could handle. I like the dungeons, but world maps made out of a ridiculously twisted path to give an impression of a larger area are pathetic. Oh, and they removed Fly and Jump spells to prevent the player from taking shortcuts.