Suggestion for preventing 'whoops! wrong masteries'

Because 'comfort breeds weakness'. Because some of us stay with the same summs, runes and masteries we had on for previous game(s). How about this: we don't make the rest of the team go through a cringe game, just have NOTHING preselected in the champ select, and whoever doesn't lock in not only their champ, but their masteries (if not runes and summs too), should take the normal dodging penalty. And if you're editing them masteries and 'forget' to pick a keystone like the troll you are, and you're level 30 of course, it should still count as a dodge.