Make it so you can choose what to display, how big it is, where, etc
cs (total, per/time)
gold (total, /time)
elo
damage (last tf, /time)
make the overlay moveable
make the overlay resizeable
champion stats (damage, health, itens etc)
rune stats (wich ones being used, how much it was used, cooldowns etc)
*make it so it doesnt stay in the video screen when the mouse is located at the video screen
there's probably more i'm forgetting or did not notice, but yeah.
Great extension, alot of potential.