Having team portraits would also be useful. Kinda sucks trying to select a teammate for an action in the chaos sometimes (often). Customizable size so as to not take up much of the view would be good. And freaking name plates in the actual game world ("oh wait, haha, so many mobs I didn't see that enemy demigod there!").
There are a lot of little niceties that should be here, and I hope they take a bit of time to get them added in 