You don't need Necromancy to be a viable two-handed warrior but it does not hurt either. I have a group with three melee chars, one is a two-handed warrior. Of most importance for me always was mobility. Because your mega monster damage/selfheal does not count much if you hit the air. One hiphop skill was not enough in some fights, I have two on my melees. Just one on my ranged. An exception is Spread Your Wings from Polymorph, as it allows more than one jump.
