Great game!
I think I spent some where around 2 hours trying to beat this bitch!
Ok suggestion time.
I agree on having the space bar be a deselect button. So many time I'd want to deselect but ended up sending ships to their doom! Aaaargh!
Also fog of war would be cool, with a planet type that works like an intel point basically like the com station in Starcraft. Maybe a battle carrier class that acts like a very slow moving planet for ships to orbit around. Some AI tweaks would be nice as well. Green was pretty smart but not smart enough to convert their planet types once I had pwnd all of their standard & naval stations. It got really boring at the end for me becaues I had to spend a bunch of time just wasting Defensive planets to win. It'd be far more strategic, & interesting to have random defensives turn into different types & might even allow for an underdog comeback by the AI.
Great game though! Loved it!