It's pretty but I don't know about better.

- How do you pan? Two finger sliding on the trackpad just zooms.

- Why does the diagram you're working on doesn't use all the remaining space? I picked one example and it's on a small-ish box with controls that don't seem to do anything and half of it is out the screen on the bottom

Ohh... the scroll metaphor... it's annoying. A bunch of tabs would have been better or even a one at a time with a tree somewhere.

There's too much fighting with layout where a plain interface would be better, something closer to https://mermaid.live/