You do not have to be a min-maxer to choose iksar. It is, in fact, a good choice for the casual player too. The whole part of being reviled by almost anyone fits the necromancer theme, and like mentioned there are ways of getting around/fixing faction issues.
In this excellent guide there's a list of merchants who will interact(and how) with you too:
http://wiki.project1999.com/Sesserdr...Strategy_Guide