There was a mod someone made that would have the HP damage you did to your opponent fly off their body in an arc, and it would let you see "numerically" how much damage you've been doing to your opponents.
It had a bit of an obscure name that didnt really directly state what the mod did, but it was made by a notable modder iirc. Does anyone remember this mod? It was really good!

Edit: NVM I found it. It was "Scathe" by shadeMe. I should have remembered it was him since that was the mod that made me a fan of shadeMe. Lol

This is it: http://www.tesnexus.com/downloads/file.php?id=29429