There would not be a meta.
The fact that Riot forces metas into the game at all just shows off how much they care about balance.
Oh, but no, we would never balance around the spotlight and make money off quick cash grab metas and FOTM champs, we put quality before everything else! Honest!
But, no one will admit that they've been conned for 8 years, so I will be called a conspiracy theorist or just flamed and downvoted for "making stuff up."