Holding aggro really hasn't been difficult for me at all, in champion gear with one of the cheaper entombed hammers...so this is my build:

Ss: 4/5 no mana return
Wm: 4/5 no snare
Cs: 3/5 add increased target and feeble
HoR: max it
Max str passive
Max dex passive
4/5 damage passive. I know warriors don't need damage, but there is nowhere currently where surviving is too tough to where you need armor passives.