Yea, I forgot about the radar too. In the version I have you could repair the palace for free, but for balance issues you might want to make it cost money anyways. After playing some more of the test the troopers seem almost too powerful. They rip apart any unit and building with ease aside from infantry. Rocket tanks seem effective. I only got to mission 5, but I think sonic tanks might work well. The AI is strange; it builds huge masses of trikes and quads and then sends them all in. My units like to run to an enemy when they come near my base, which messes up the walls of tanks I used to use for defense before turrets are available. The AI also likes to shoot sandworms, and will end up shooting each other if a sandworm is under my units. They also will ignore the enemy if already shooting a sandworm. There were a couple problems with the mission map, hard to explain without a screen shot. Also, I think you need to make a button to issue an attack command, maybe control would work like in some of the Westwood games. Otherwise, you have to run a unit into a spice bloom.