Zerothehero's mod which boasts "239 total npc changed one by one". anyone know of anything that can top that?
Then you're certainly looking for Leeloo's http://planetelderscrolls.gamespy.com/View.php?view=mods.detail&id=661 with http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=7217&id=3035. Here's the quote from readme:
This mod changes nearly every single NPC in Morrowind, Tribunal and Bloodmoon with a new head and hair.
And /in my humble opinion/ it's the best looking NPC replacer for Morrowind so far. The selection of the heads and hairs for particular NPCs is simply outstanding. Leeloo has put a lot of work and love into it.