Just tried the library widget for the first time, and I have to say it was pretty confusing at first. I wanted to make a few suggestions to simplify it:

(1) Change the icon for the "add clip to Project" button and context menu. I interpreted the PLUS sign to first mean create a new library item or add a clip to the library. Looking through the breeze icons, I'd recommend the "dialog-ok-apply" icon, or "document-import" icon.

(2) Replace the term "Clips" or "Items" in the entire widget to "Edits". I feel edits are a much more appropriate title. Users won't initially recognize the ".mlt" extension as a clip, and I think it's too confusing with all of the items in the Project Bin also being called "clips". I realize the .mlt file is being imported and becomes a clip, but I think until it becomes a clip it would be a good idea to differentiate it from the project bin items.

(3) Change "Add clip to Project" tooltip to "Add edit to Project Bin", or "Add clip to Project Bin" if you're staying with the clip tag. I thought the .mlt file was going to be imported right into the timeline, and I ended up reporting a bug because I thought it wasn't working. Users need to know it's going into the Project Bin.

(4) I would definitely change the "add selection to library" tooltip and icon. It doesn't let the user know the selection is supposed to be from the timeline, and it doesn't exactly convey how those selected clips are going to look in the library.

POSSIBLE SOLUTIONS: 1) Have the button (probably with the Plus icon) say "Create new Library edit" (I know, it may be a little lengthy), and then if there are no clips selected, have the status bar show an error saying "You must select one or more clips in the timeline to create a new library edit). Or 2) Chang icon button (to Plus symbol is the best option I can think of) with the tooltip "Add selected clips in timeline to new edit".

(5) This would be a cool feature, have an option in the context menu titled "Open edit in new window" with an icon like story-editor, document-edit-sign or edit-find. It would open up the edit (.mlt file) in a new Kdenlive window and allow the user to edit that particular project. Once they save and close, it could automatically update in Kdenlive, or there could be a button called "Reload edit" and it would update the library somehow.

Anyway, those are a few workflow suggestions to make the library less ambiguous and more user friendly. :)

Reproducible: Always