Finally see an update for you, and while it isn’t necessarily promising the full app, it talking about landscape in general, so I wanted to update you that an employee did indicate they are working to make landscape mode more compatible on more parts of the app:
Hopefully that will extend to other areas as well. 
@R.Good reminded me that you would love to hear of this progress, so I’m making sure you know more landscape support is coming. We’ll have to see how much gets done this year, but it’s a good sign that they are still working on it, and we know that some updates are coming this year at least. 