I also use the All Spell Can Learn mod so I can give my Qunari warrior all kinds of abilities. I understand that it does make things a little unbalanced, so I offset that by doing a solo playthrough right now. The only other character I allow myself to use is my dog. It makes the game so much more challenging. My favorite specialization for him is definitely Champion. War Cry is a must have. Once you get Superiority it knocks enemies back and gives them a penalty to attack. Thats useful when youve got enemies all around you. Rally is nice, since if you have motivation, it gives everyone around you a +10 bonus to attack and defense. If you couple that with Miasma, which gives every enemy around you a -10 debuff to attack and defense, its awesome.