As I forging today it dawned on me that a really nice feature to have is a HUD section that shows all the key properties of an object when you point at it (without opening the property pages). For example, the game type label, the max count, the team assignment, etc. That would save a lot of time and button pushing and reduce the possibility of accidentally deleting or moving an object as a result.
Another really nice features could be glass block!
Seems like it would be easy enough to implement.
We need a more accurate coordinate system if possible.