Does stealth orbital skill works as described?
Because if I read it correctly, it says that orbitals can attack and have a 10% + 10%/rank to remain unseen. So at rank 9, you would have 100% chance.

Now does remain unseen is the same as "can't be attacked"?

If that's the way it works, I think it's fair considering amount of time would require to train it up. But I am concerned the impact in the new combat system. As discussed before, the enemy would have to kill all the orbitals before being able to attack a planet. If that's the case then the planet would pretty much be invulnerable, unless the attacker can counter with the Clocking skill.