Agreed but I suspect some here are overlooking one vital aspect - the physical size of the current SRV. Even the current one needs to have the wheels retracted into the body to fit into hangar via the hatch so I can't see anything larger than the current model we have. Apart from that aspect there is no reason why FD can't give up variants of the current SRV or at least let us modify or swap out modules to make the SRV more applicable to different roles.
Enter the Panther Clipper and other ships in the extra large size.