- Geo-mod (being able to blow up walls and stuff) - Define the tile size (be able to make it so its not just 16x16) - Change the size of a map (you could make it smaller if space is not used) - Ablility to give the "extra" tiles a picture like the normal tiles - Ability to customize the properties of all the tiles - 45 degree tiles (it would be cool to have a diagonal tube that works right) - Built in mp3 player EDIT: the server can have an option to queue all the projectiles and send the queue to entering players. this would eliminate the problem where someone lays a mine, another person sees the mine, re-enter the arena, and rams through it (becasue its not on thier screen anymore after they re-enter).