Subject Sass, personally for my own warrior playthrough I had Wynn there for my healing, she's really important to keep with your party at all times, her Liliana and Morragain were my ranged, keeping most health damage away from them. When the Darkspawn came I used the dwarves to thin their ranks, while using my tank warrior to dole out damage on the Archdemon. The fact I was the only taking on an enemy head on, left most of my healing poultices for myself where as I had Wynn auto-consume Lyrium potions if she needed them