The problem is that anything with a wider wingspan that the 7x will not be able to use the parking stands at the GA center, therefore you have to compete with the airliners for short-term parking, and assuming you get one, it will be limited to one hour maximum, after which you will have to re-position. Also, because you will then be parked at the main terminal, your pax will have to screen an clear immigration at that same main terminal, which is a bit of a hassle...
So the LCY cert for Globals and Gulfstreams is a bit of a non-starter in my opinion...