Perhaps the player's floating health/mana bar could have a unique appearance to make it stand out from the bars of teammates (or at least make it a toggleable option). This would make it easier for players to see where their champion is in hectic teamfights.

Yes!

I agree completely, maybe a different color or box or something. I want one with pink lightning bolts and spikes!

But in all seriousness, I can't count the amount of times I've been easily killed from losing myself in a big mid push and getting caught out of position, as I usually play AD and AP carries this is a huge problem for teamfights, as I'm sure others have had and will continue to have this problem.

I agree i think Caution orange would be awesome, seeing as there is already color blind mode, it shouldn't be that difficult