[Spaceships] Using two smaller ships to simulate a larger ones

[Krinberry]

Heyas! Okay, this is another in my series of Dumb Questions Based Off Of What Are Probably Bad Variant Designs To Begin With, but in my various mucking around with things, I was curious if anyone had any thoughts (official or otherwise) on doing things like using two 'ships' to construct was is in essence a single larger vessel. From the design standpoint it seems technically pretty easy (for engines you'd just add up the total thrust and dV for both and divide by 2, power points could be shared, armor would be as per normal and in combat they could be treated as two ships flying in close formation for attacking etc).

That said, I know it's still probably a bad idea for reasons I can't immediately see myself, so I thought I'd ask folks what they thought, or if they had a better way to deal with it (I know that there's the SM X.5 rules for example which keeps it all treated as a single vessel).