1. Changeable Include all bricksIt would be helpful if you can set changes for the "Include all players bricks" section of minigame creation. You can set if they allow events, vehicles, weapons, spwans and such. It would be helpful for a TDM that allows building but you don't want them making jet bricks if you are a no jet player or spawns for the other team to spawn on a kill brick.
2. Default MusicMake it so the host or admins can set default music for the server. Other players can choose to not listen to the music. This can be changed to what the hosts want.
3. Blockland radioEver want to listen to your favorite battle song when you are fighting but keep straying to far from the music brick? That is when the Blockland radio will come in handy. It is a GUI that is assigned to a key that allows you to pick background music to listen to listen to wherever you guy in game. Each person can set their own song to listen to, only if the host has it.
4. The H1 Heedical

This is the model for the H1-Heedical tank. It fires with a machine hun instead of a rocket. 1 person drive (Inside)
1 person shoots (Top Gun)
2 people sit in back (left and right)
I will occasionaly update this with more ideas.