The top-left box of the HUD(where enemy stats are displayed) needs a redsign
Here it is when the HUD is scaled to 50(I think this is the default size?) Already the readability is less than ideal:
http://i.imgur.com/r2gZfEk.png
But then if you scale the HUD down, which I like to do to maximize vision, it gets really bad:
http://i.imgur.com/Ewyb89C.png
The numbers have too little contrast with their background. The HP display is especially bad, I have to lean in and stare to read it. And checking an enemy's HP(mostly for timing smites) is the main reason you use this part of the HUD.