Problem: When using the watchlist expiry feature, pages are removed from your watchlist automatically without notification.
Proposed solution: Create an optional watchlist notification when the page is being removed from the watchlist
Who would benefit: Editors who have expiring pages on their watchlists
More comments: Sometimes you misjudge just how long you need to be watching a page and it be removed from your watchlist without you realizing. An option to see when the time has expired would let editors know this has happened and be able to make a decision (do nothing or visit the page and watch it again).
I'd like to comment that the lack of a notification was by design. But the popularity of this proposal can change that ;) In case you weren't aware, there are a few ways to see the expiry: Expiring watchlist items are listed first at Special:EditWatchlist and show the expiry time. You can also hover over the half-star (or watchlist link) on a page, and that will say how many days are left. The same is true with the clock icon shown next to temporarily watched pages at Special:Watchlist. Finally, it's displayed on the edit screen next to the "Watch this page" checkbox. I kind of worry about using Echo notifications as you suggest, as depending on your workflow (i.e. Twinkle settings), you could have MANY and it would quickly become too spammy. Better I suppose would be for you to opt into notifications only for specific pages, but that complicates the UX. Anyway, your problem statement is clear, and that's the important part. We can figure out the solution later :) MusikAnimal (WMF) (talk) 19:02, 13 January 2022 (UTC)[reply]
Support if it's optional and selectable on a per-page basis, otherwise an hour of Twinkle work could get you >50 notifications that same hour the following week. Giraffer (talk) 18:01, 11 February 2022 (UTC)[reply]
Voting
Support I never temporarily watch a page for I fear that I might want to continue watching the page later than what I have selected and I will forget about extending the watch period. This leads me to not watch many pages in the first place to keep down the size of my watchlist. Having a notification for when an expiry occurs can help me temporarily watch something and evaluate whether I need to continue watching it after a period of time. Lectrician1 (talk) 01:01, 29 January 2022 (UTC)[reply]
Support I never temporarily watch a page for I fear that I might want to continue watching the page later than what I have selected and I will forget about extending the watch period. This leads me to not watch many pages in the first place to keep down the size of my watchlist. Having a notification for when an expiry occurs can help me temporarily watch something and evaluate whether I need to continue watching it after a period of time. Lectrician1 (talk) 01:01, 29 January 2022 (UTC)