In ranked all picks, I several times picked the hero I wanted to ban, either clicking at the very end of the 15-second ban phase or just not noticing that the ban phase was over. It happened to some of my friends too. I am now very careful so it does not happen to me anymore but I am sure that it still happens to other players.

I have two suggestions to mitigate this issue:
- After the ban phase, do not allow any hero selection for a couple seconds and display a very visible message like "About to start hero pick phase".
- The buttons to ban and pick heroes are currently identical, which is confusing. Their text should differ. For example, the button text could be "Ban invoker" during the ban phase and "Pick invoker" during the pick phase, in lieu of the current neutral text "Invoker".