What is the ultimate luxury of League? (IP Sink Idea)

We've all been there, the troll in champ select. What is there to do,

The answer is to leave the game lobby. That, however, puts you in a place to lose LP / a placement match. What can Riot do?

What answer does Riot need for the IP system to feel satisfying? Something that is the ultimate luxury, when someone else dodges that queue for you, and you can get paired with new players right away. What if for [INSERT ENORMOUS NUMBER HERE] IP you could buy one lobby dodge.