It seems that a bunch of people are still wanting to experiment with the Nest Integration but can no longer. It might be a good idea to have a "beta" category for built-in apps. That way HE might get some additional free testing etc while providing the more adventurous users with a way to explore.
Even ST had this - a "beta" section/category that allowed people to install beta-final stuff with the understanding of no real support other than forums etc.
The only reason I bring this up is several posters have still been requesting the Nest App. Also if I do get that 3rd "controller" hub and 4th developer hub I want to be able to install it on those since I have a valid and working Nest Dev account...