A Gamemode Idea

Alright so over the years Riot has given the community a lot of different gamemodes and each one has been fun to play. But what if we had a gamemode for certain events such as the harrowing. There should be a new gamemode for the harrowing which includes Vilemaw taking over Summoners Rift. Now this is all just an idea and it's an open post so feel free to add to it. Imagine Vilemaw crawling around the Rift and destroying towers and either coming out of the ground or dropping down from the air and just randomly fighting champions and objectives. This gamemode would sort of be a 1v1v1 Vilemaw being a separate team, but Vilemaw could change targets and stop focusing one team and focus the other, or maybe the summoners could all come together and fight Vilemaw, in a competitive way that will give you a buff. Now this buff should be something along the lines of Elise's spider-lings which would follow a champion with the buff. This is all I could really think of so far but as a community I ask that we should try and build this gamemode, because come on who doesn't want to see a giant spider crawling around and destroying stuff.