konkydonk

To begin with, great game! I'm really looking forward to the next evolution. That being said, I disagree with technogically unavailable buildings being destroyed. I mean, if someone were to take over a planet the first thing they would do is investige the available technological innovations. I would prefer to see an option where the defenders (at the beginning of the battle) would have the option to pay to destroy all of the planetary upgrades.

Set up a couple of planets as cash cows. Load them up with (seudo) banks, farms and happiness buildings. Don't produce anything and the planet wont have much in terms of cost. If you can't stand losing out on a planet load of production then throw on some research facilities.