As a Warrior, I can suggest:
  • Sword Expertise (or another, but swords are the best weapons, unfortunately)
  • Stun

    The following were my personal choice. The above are "mandatory".
  • Shield Expertise
  • Identify
  • Augment Damage
  • Augment Defense

I like Identify, simply because there is so much to Identify. I didn't take Repair as I had to drop off loot before my weapons ever wore out, and repairs don't cost much. Paying for identification or repairs also helps the merchants attitude towards you, improving prices.