Overall the old space designer worked for me despite these problems because it wasn’t siloed and because I could control + click to open a new tab to reference existing entities or see the configuration of multiple spaces at a time.
The total separation between the workspace and editing the configuration has made the navigation more restrictive, at least, in the ways I’ve grown accustom to using it. I’m confident that the behavior or models, redirects, and default screens has grown less predictable but that’s a feeling. It could be amplified by the frustration that comes with change overall, since I cannot consistently predict where to go to do/change things.
I’m sure that when that is released I will welcome the change. But I would love some immediate pain relief until then.
All this to say, my experience is miserable here. I’m sure that feature testing or other users may have a much better way of navigating this change. I’d love to learn it and adopt it.