KTO has three new campaigns for a total of six and there are other free theaters available for 4.34.

IIRC BMS and PMC don't share the same viewpoint and with the purchase of the rights to Falcon 4.0 by Billionsoft, I'm sure that payware for BMS is now illegal.

Lots of other options if you're serious about flying BMS. It's literally a whole new sim and the AI is incredibly smart.