I agree on Elite Dangerous being great for the flight piece of Star Citizen. I do feel the lack of ability to land on planets and do things on them makes things get old after a while. Between Engineering and mining (in part to get better engineering) it is easy to burn out on Elite. That, the hour+ shuttle missions to try to get cash and the work to get Guardian stuff unlocked were the last straw on my burnout. Now I just log in occasionally for some quick combat.
I would like a hybrid of Elite flight model and No Man's Sky ability to do things on the planets.
Yeah, I agree with you on the burn out regarding mining. It's rough and can make the game not very fun. They did come out with a DLC that allows planetside landings and exploration which gives it a lot more to do either way I see your point.