Put a warning on the selection champ at baning phase pls rito

I liked this new champ select, but the absence of warning when you have to select a champ is so annoying because sometimes you're looking at something else and you're not paying attention at the pick moment of ban or champ but they aren't any warning so you don't pick and get a 6 min delay until you can play. And it happens a lot where you participate at 6 different champ selects because they're always somebody forgetting to pick something.

Pls Rito put a warning in the next patch pls, that would be cool.