Just a simple suggestion. When picking a hero I'd like to see a small square next to my mouse that contains my hero stats. This way I don't have to go to my herodex and do much trouble to look at those stats.
The stats would show up when you hold your mouse still for a short delay so it won't flood your screen when you hover your mouse over it (Thanks Sliferjam :3)
It would look something like this:
My mouse is over witch slayer and (mouse is gone :<), next to my mouse is a small transparant square with the stats. If it's too annoying, the stats can also go to the right corner next to the hero description. Small change but a usefull one :>.