With the addition of the legacy Hornet, U.S. Naval Aviation and the soon to be released F-14 Tomcat, my wish is for a dedicated U.S. Naval Air Station. Perhaps the only thing I miss from both FSX and P3D v4 is the ability to add scenery such as U.S. military installations, especially those that I was stationed at.
I hope down the road DCS expands North America to the west coast. The ability to have either NAS Fallon, NV and or NAS or MCAS Miramar and NAS North Island would make this amazing product even better. The ability to fly field carrier landing practice (FCLP) at any of the aforementioned NAS' would be helpful, especially with the addition of a working Fresnel lens.
Last, I forgot to mention Virtual LSO. vLSO was really helpful to me behind the boat and during FCLP in FSX. Something similar or getting vLSO onboard with DCS sure would be awesome.