Minecraft server idea

I was thinking about making a new minecraft server, but I do not want a ordinary factions server but want something special, something not made before. This was my first idea: 2 teams, both run in begin bij a server owner and later on members with a voting system.
The goal is destroying the other team. People can leave a team or get kicked out of a team and will join the rebels then, these rebels have worse perks. The 2 normal teams would have both other perks. The teams can make fortresses, towers, walls, canons what they want and the server world would have a small border with live map. Teams could make tactics and such for destroying a outpost or a mine, there will be mines spread over the world, other places can't be used to mine so you need to control these area's. There will be a team limit so there is no big member diffrence between the 2 teams.

Would this be a good idea? Any advice? Will there be people that want to join it?