I came here because Nate closed the bug 307505 with link to this discussion.
I wanted only go up by double click action. I see I commented the bug in 2018 january, but actually, I wanted it earlier. And I still want it very much.
But actually, adding more general feature with ability to choose action looks nice to me. Please, reconsider, at least for level up action.

@afarid Thanks for the link, I will make a review request for what I can fix myself.
By the way, what if changing is trivial and I just want to provide a patch without asking for review? For example, I recently did a "review request", but there is nothing to review there: https://git.reviewboard.kde.org/r/130008/ =)
As I can see, kdenlive team prefer phabricator, but not reviewboard, correct?

Was implemented by mardelle, so I close this revision.