Blood Dragons get their numbers increased by defecting KNF. In the end these pilots would have a Katana after their original ship got repaired enough times it was useless but I would imagine the odd player here and there would want to RP as one of those newly made BD still in a Chimaera. It would be left to faction responsibility to limit it as they saw fit.
It's cheaper to use and support already existing Chimaeras then modify them into Katanas atm. Yet it's efficient enough.
To those, who want "defectors" to use Eagles/Sabres: Blood Dragons rely on Kusari designs mostly, and foreign ships are harder to maintain. Furthermore, they're actually easier to hit and less efficient.
A.D.M.I.N. Kingvaillant walks up to the front of a scene in a big theater under a big spotlight rated at 60 000 candles. Facing an audience composed of a dozen of men dressed in old combat armors so big they can't even fit in their seat, Kingvaillant clears his voice:
"As it was approved in the initial request sent to the A.D.M.I.N. bureau and judged to fit well with the Blood Dragon history, the ]bd[ is within its rights to use the aforementioned ships."
*The spotlight explodes and the whole scene falls into darkness*
PS: It is always useful to save this link somewhere.