I'm very much in agreement about the issue of long resting all the time. It takes away a huge portion of the balance of 5e when you only get one short rest per long rest (and short rests are handled poorly too)
It would improve the game if there was a limit to how often you could long rest. And maybe tie "camp scenes" to short rests too. That way we can still go to camp, and get the scenes, without long resting all the darn time.
They should bring in the short rest mechanics of hit dice etc as well. (and maybe reducing the number of consumables that restore health somehow). I'm sure people will find another way to scum around any constrants though, but right now the game is poorly balanced around long rests..