Right now, cubecraft is built mainly on all pvp based game modes, with the current exception of miner ware (kinda).
I am suggesting that they add a non pvp based game mode such as build battle, or as others have mentioned, a creative mode such as housing. This would not only help round out the server, but it would also attract some more of the casual playerbase that likes to build who may not be interested in pvp.
Let me know your thoughts on this!