A fix for "insta locks" in normal games

I was playing frequently normal games these past few weeks and got a lot of insta locks. And a lot of anger from the players for insta locking some mid/top champions then raging, saying stupid stuff as usual and nobody wanted to leave to reset the champ select. So I thought of an idea to fix all these insta locks happening. Can riot make it so that when the champion select pops out you couldn't lock your champion for like the first 15~20 seconds. Whats your thoughts on my idea?
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