I hope I did the right thing by making a comment here, rather than opening a new thread.
In the brief time I spent with Roam, I got used to the way it handled moving around nested lists. All I had to do to move back a level was press Enter; the Tab key would move me forward/inward, the way Obsidian also does. In Obsidian, however, pressing Enter on a blank second-level item ends the list, the way I would expect it to do if I pressed Enter on a blank first-level item.
Does this seem unintuitive to anyone else? I would love for people to have custom shortcuts & do whatever works for them, but my concern is that the default behaviour is jarring as it is (at least to me).