Ok, I play as the TEC Loyalist faction and I noticed that the Militia Weaponry on the Defense Tree doesn't work. The Militia Armor that comes after it does work, but the 30% more damage that Militia Weaponry should give your starbases, defense platforms, hangar defenses and ships currently in your own planets, does not work. I don't know if anyone else has this problem, but I think it's a bug/glitch with that research. It would be great if it could be fixed, because it is a good 30% more damage I'm losing, so...
Otherwise, the beta is great!