Cool Concept for league or another MOBA

So you have a moba similar to league or dota but instead of having all these champs to pick you have character customization where you have runes or something similar that change aspects of your character maybe make them ranged or something else ect. You could also have a large array of items that further change aspects of your character. Youd have to have a large array of runes and items unique enough to add complexity but I think it could be really really cool.

I call it legends of league the squeakquel