It's good to know that there's no aggro mechanism, but the enemies do tend to attack whoever is closest to them, except for rangers and wizards, who seem to always target my wizard. I used Shadowheart as my pseudo tank until I found Karlach, and now I try to get her to absorb as much of the damage as possible, since Shadowheart has a helmet that heals her when she heals someone else. Her heals aren't very strong, but they definitely determine the outcome of some fights. What I've missed most is the charge that Githyanki girl had, and someone to wear heavy armor. I didn't craft the splint mail at the forge since I have no idea if I'll ever have someone to wear it. Instead I crafted the medium armor and gave it to Karlach, and the shield for Shadowheart. But as soon as I got to act two I found a vendor shield that was just as good, or possibly better. Oh well! It's still an amazing game.