Shurima Ruins Gamemode

I bet a lot of you had this idea before, but some of my friends and I came together and we thought that we need a new gamemode for LOL. of course I know it's not that easy, and yes I know no one will notice this idea, but how about a gamemode thats kinda like a hacknslay game? like for coop, 2-4 people are together on a map (for example Shurima Ruins) and fighting against AI/creatures/bosses and doin quests. I am not a gamedesigner nor do I have any experience in game design, but my mind wouldnt let me go without showing you some designs i had in my head. please dont be offensive, but tell me your honest opinion. here are some of my thoughts:

level design: http://i.imgur.com/XEenECT.png

sun plateau: http://i.imgur.com/QikE4ni.png

http://pre14.deviantart.net/38f2/th/pre/f/2011/337/0/a/sand_and_ruins_by_blinck-d4i1ama.jpg (Sand Ruins Example[not by me])