When ascending heroes a great option would be to display only hereos of same coulour. A toggle option all / own coulour should work. Also it would be nice to have after teams all the favourite heroes before food heroes.
I agree with both those ideas. I also think that you should be able to sort heroes without keeping those in your current teams at the top, and I wish that you could mark the heroes that you are currently working on leveling.
You can sort your heroes after power, if that’s of any help.