Think it was for BPA. BPS is something new and fresh.
Edit: As Ventana already said, you should try come up with a good wepon list, ship list and try set-up a diplomacy list. Good preparations once you are ready for a faction proposal.
If there are any questions among theese list, I suggest contacting the existing Bretonia lawful factions.
Also, I'm very pleased to hear that you are trying your very best to adapt into discovery and that you are willingly joining existing factions in order to get more knowledge about the mod itself. Kudos!