I play quite a bit LoL, so I wanna says abit about the command card.
Most people who play LoL like me, are used to using D as a heal / damage/ crow control spell and F as their dash / increase move speed spell If you can let your heroes abilities on D / F similar to that, many will appreciate
Also, I think that each heroes should have 1,2 general abilities and 3,4 unique abilities. Too many generic abilities will dumb down the game and increase learning curve for not much gain.
I would much prefer appreciate good story and gameplay, something like that Additional pylon do very well