Oh, I see that u missunderstood this mechanic as non priority to use enemies against enemies, but if u will throw enemies away or try to smash them it will be less effective then using them to kill another enemies. I don't think that game will be quite fun and logic without taking them damage from falls.
What about spacial awareness radar - its really good advice. I think it will be more predictable where player should move in the battle.
Also i 100% agree with you about tutorial, i would like to learn this mechanic, because I didnt try it still in my games.
Also I didnt understand your suggestion about "visible UI and HUD elements that indicate that you are grabbing someone", beacuse there is outline around enemies, while you hovering them.
Thank u so much for such a huge feedback! I will try all your advices.