To get them off my chest (and sorry if any of them have already been mentioned, is super late and I've been playing all night) Unit transport. - it would be great to move groups of units with a few transport ships, when power for a teleporter is in short supply Crushed planets stay crushed - finishing my opponent has rebuilt on the metal deposit that is now floating in the sky over the crater I made with a moon is a bit... Unsatisfying. Metal planet variety - different looks, or colors, maybe some paint schemes..? Something. Has there been any consideration of stealth units, EMP weapons and underground bunkers for units and factories?
Metal points after a crater forms is a glitch. I like how temperature makes gas giants change color. Lava, moon, and metal planets have much to gain from a similar implementation. Unit transport, there are some creative ideas to add to this. Teleporter was a simple one. Unit cannon is coming up. Cool stuff.
Metal planet colors would be an awesome addition! I am imagining using the temperature slider to turn the metal planet into a rusty red/brown color.