I noticed same ( and I believe its second time where the max zoom level was decreased ). I assume they do thats because of performance, or again because these xbox-gaming-console is limited in amount of RAM. These VFR map is forme still far away from a nice usable VFR Map. Its a gimmik, not more. But since SU10 its at least better, because we can see some airport informations ( but also here the usability is worst: e.g. why is no ‘right mouse’ support to choose the frequencies for the ATC from that - ah yes, a xbox-controller havent a right mouse )
That here is an older existing wish about improvement related to the VFR map:
It mention the zoom level, but as different reason.
EDIT: and here we have a new topic about the zoom: