I don't know if it's deliberate or not, but you can board and capture space monsters and make them part of your fleet. It's fun to do so, but in some ways also doesn't make sense to be able to. EDIT: I just saw the thread farther down about this being deliberate, at least for now.
I have another point against boarding monsters and why it destroying the balance. Well, I was able to capture little dragon only by 3 frigates, equipped with 2x standard nuclear missiles and 1x standard laser cannon. And also the dragon just got scared and obey exactly one marine which I use to get a pet.
Well, maybe it wasn't a marine but Daenerys Targaryen a mother of dragons . That would explain a lot.