you know. the limited ammo of the cannon is weird, i mean the base has the power and resources to build an infinite amount of robots but it can´t supply a cannon with ammo, maybe give it infinite ammo? reduce the damage too. that way bases won´t be invincible.
it would be a lot better if interstellar travel map was like the first on in that it could show every planet and you didnt have to go looking for every planet before you could travel there.