I don't quite remember the lore, but isn't the Onslaught of core epoch times?
While a dedicated military carrier sounds nice (a counterpart to the Astral), a gutted and refurbished one, eh, not so much. The Condor is partially gutted and refurbished already, and there are certainly enough falcons, eagles, conquests and ships made of bits of conquest and eagle already. That said, I trust in Erick's ability to create a ship that can look like a Falcon without automatically going "Oh, that's made out of crispy fried shredded falcon". The Hedgehog doesn't make me think that it's just a tiny Onslaught with it's wings clipped or like one of these
monstrosities where a group of ship engineers decided the Onslaught just wasn't cutting the mustard, so they took 10 Onslaughts and welded them together to see how that worked. That also said, I do very much like the edited omnidirectional mounts on said monster.
EDIT:
Ninja'd...
Yeah, the Falcon is the smaller brother of the Eagle and has "wings" compared to the Eagle which is more of a general delta wing shape. Almost looks like the Falcon could have some sort of megacannon built into that space in the middle. Someone's probably already done it.
DOUBLE EDIT:
I said "said" a lot, didn't I?...