I just finished making a League of Legends style map on Ravine yesterday using the whole map, as well as a LoL gametype for it. There may be changes as i need to test play it to see whats good and whats not.
But for now the map has 3 lanes with a base at the end of each lane, 3 defense turrets per base. Your base health is 2x overshield, health does not recover, but the damage output dealt is lower than normal, the only way to recover health is to go back to your spawn point, just like in LoL. Movement is at 90% so your slightly slower than usual and the respawn is set at 30 sec to prevent players from playing recklessly.
The game type is built off capture the flag, it only takes 1 cap to win, after testing ill determine whether it should be more or not.
Add me if your interested in testing it out, im looking for as big of a party as i can get. My GT is Keyboard Kenny. You can also PM me or respond here if you have any questions. I can explain alot more about the gametype over Xbox Live.