Gamemode Idea?

What if they had a game mode of this huge Colosseum where everybody fought and cs for 10 minutes, and at the 10 minute mark everybody gets to purchase items for 30 seconds, and restores to full health to have an all out battle with no respawns, and being the last to survive (yes kind of like the Hunger Games.) So depending on how fed you get within those 10 minutes will help you in the last fight.

Rough Sketch:

https://i.gyazo.com/303f392f8c286805f9cb6dd01b8f83a7.png

(As you can see I'm a great artist)

I just wanted to throw out a new idea, because I'm pretty bored of just playing Summoner's Rift and 3v3 and Aram aren't really my cup of tea.

Tell me guys what you think, obviously this is just a rough sketch and I'm not like super genius with coming up with ideas, but I think this would be super fun for summoners and their friends to play.

EDIT: I accidentally put this in the wrong board earlier, mb.