Thanks for demo'ing, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-h33DohLLbVE.html It's odd that there's no good pictures to understand what the GUI is like.
Nice and interesting watch! We choose Backstage and are in the middle of implementing it as an MVP. It is really nice to hear that others face likewise challenges, but also experience the same value. It helps me motivate we made the right choice.