Thank you very much for the detailed explanation.

I have spent some time with the alpha now. I think it is absolutely fantastic!

I love the new narrative style of the UI. This ties everything together beautifully and makes it easy to explore. That's really what I am lacking in my application. Currently it simply opens to a blank quasi-playground and it is not obvious what to type or how to get started. I started writing a separate HTML manual but I don't think that's the right medium -- much better with something interactive in the image like the Documenter.

Just clicking around everything seemed to work basically smoothly for me. Maybe it's already time for me to port over to the new GT? Or what do you think the most likely obstacles would be in transitioning to this alpha version?

Currently my custom inspector extensions are mostly based on Roassal and List/Tree/Table views. I also have one or two Glamour browsers. Is that all still there in one form or another?