I find myself on the fence about my next streaming player. Hands down getting another Shield would be my preference since it's the best from a hardware perspective.
With that said, I am fairly certain when Hulu launches their live service next month, there will be no sign of an Android TV app. I realize it will have cast functionality, but I already know that won't pass the wife test. I rejoiced when PS Vue finally released their Android TV app, but I am sure this app was low on the priority list for Sony just like it likely is for Hulu simply due to the fact that Android TV is likely a small piece of the pie in the streaming set top box market.
Makes me sick that I am considering an Apple TV, but that's where I'm at.
Honestly, if im not going to do AndroidTV my next choice is Roku. Have always been an Android TV guy but bought a new TV with Roku built in about a month ago and man I really like the interface. Super fluid and just works.