Orion 0.99.130.1-beta (WebKit 619.1.11.111.2) under MacOS 12.7.6 ("Monterey") on an Intel MacBook Pro. I thoughtfully considered listing this as a feature request, but on balance I think it's closer to being a bug (or group of related bugs). I apologize if that's a wrong decision.
In importing my Firefox bookmarks, Orion duplicated or triplicated many of them. For example, my Firefox bookmark toolbar (with its folders and subfolders) are present in Orion as "Favorites" and as "Bookmarks Bar". This makes it frustrating and confusing to add bookmarks, because I have to slog up and down through the list to try and find the right instance of the right subfolder of the right folder of the right collection.
But my attempts to clean up the mess are foiled because adding, removing, or moving a single bookmark is a vexingly slow process. Orion thinks about it, then the bookmarks toolbar disappears completely, then Orion thinks about it some more, then I get a spinning beachball (enough to make me wonder if Orion has hung and is about to exit), then Orion thinks about it some more, then the bookmarks toolbar reappears with my change made. In that amount of time, I could have made 20 bookmark changes (remove, add, relocate…) in Firefox or Safari.
It is not possible to shorten the process by <ctrl>-clicking (right-clicking) a bookmark in the bookmark toolbar and adjusting its presence or properties, nor (still in the bookmark toolbar) can one simply drag a bookmark up or down within its list—both of those are possible in Firefox. But in Orion, one must use "Show Bookmarks" and attempt to manage them in that slow, clunky, overly-constrained interface.
Orion's bookmark management should please be made as fast, easy, and versatile as Firefox or Safari or Opera.
0.99.130.1-beta (WebKit 619.1.11.111.2)
Monterey (12)
