@Peter Uithoven: It definitely is. I don't know about other, but I'm not personally willing to go through the extra effort to lookup ids and use them directly. I create links to all sorts of pages that don't exist yet so that creating those pages later is just a bit quicker; if I were to use page IDs I wouldn't have this convenience. I suppose if it becomes a problem I'll switch to an alternative to WikiJS.

@Josh Cox: Well. I don't think it is a duplicate of that feature request, as that seems to have been interpreted by @Nicolas Giard as being able to use ID:s in links, considering his "Completion" marking on it. A suboptimal solution since they are hard to get at, not natural, and requires you to do manual steps when inserting links in an article as opposed to using the "insert link" button.

I interpret this feature request as "when I move a page all links to it should be updated accordingly", which I think is the correct way to handle it. As @Nicolas Giard also mentioned, "title based URLs will stay the default" so I think the solution should be to use title based URLs and update the internal links in articles.