Not the first time this has happened. There's a 70 seat max version of the CRJ 900 out there known as a CRJ 705. Now there's a 50 seat max version of the CRJ 700/701/702 known as the CRJ 550.

Apparently ALPA once successfully argued that removing seats and arbitrarily restricting MTOW doesn't qualify for being a smaller airplane with regards to scope. But if you take the airplane and get it re-certified as a type with lower MTOW and max seating capacity it does.

Also, AirCanada is currently having bombardier convert their 705s to 900s with an appropriate change in type. So it's reasonable to believe the FAA would let Gojets get some of their 700s re-certified as 550s.