2 weeks ago I've got an idea to create a server (spigot) plugin, which will provide competitive minecraft gamemode. I have already created it and now I want to launch a server to play on with matchmaking and other features. So if you want/can support me with it you can contribute at indiegogo http://igg.me/at/mcm.
Let's go a little bit deeper...
So, the gameplay: players split to the teams and trying to protect their teamblock (an enchanted obsidian block) and break other's team. Players can't build or break at the 3 blocks range to any teamblock. Whenever player dies he can respawn in a starting world, it starts a 60 seconds cooldown, when it goes, player can type /respawn and it will tp him to his team's block.
Arena world can't be in a winter or ocean biome.
I am using a world border to force players stay close to eachother.
Thank you for any support and I'll be grateful for any ideas to develop this gamemode!