I would like to see some type of toggle in the game settings menu to show beneficial and negative damage to ourselves and perhaps group members.

Also would love to see some type of toggle for our summons to see where their health is. Be it a health bar over their head, a separate health bar window in our interface or simply show their health bar when hovering over their body similar to when we see an enemy health bar when we hover over them.

I assumed "Allies' Health Bars" in the game settings would include our summons but sadly I was wrong

With "Parasite" and the zombies especially I would like to know when I am about to lose a "pet" so I can be ready to replace it.
I don't even know if "Bulwark of Dawn" heals my pets because there is no way to see their health bars and there are no floating numbers for beneficial effects. I'm assuming it doesn't.