This can be done today in a theme component if one wishes. I know 100% that @codinghorror would be 100% against, by default, popping up a JIT every time an admin hits the delete button.
A JIT on every delete would heavily discourage admins and mods from pruning the garden cause there is constant added friction.
Quick mockup as a non-blocking reminder - thoughts?
Pop the composer filled with a DM to the person, official warning = yes.
(obviously the post itself would have a red background too from the moderator just now deleting it, I don’t have a test instance anymore to use for this!)
Unless we can include the original deleted message it’s not going to be particularly helpful.
Are we expecting the user to remember all of their posts in the topic and identify which was removed?
If it does include the original message then we’re still talking about rebranding delete as ‘move to PM’.
If it is a theme component that is fine but I would not ship this by default.
I also think that this added friction is not necessary and neither does it make sure that people get notified. There should be friction for not sending a notification, not the other way around.
After following a few links, I am now learning that there isn’t by default a notification sent to people having one of their post deleted !?? (even if no reason is given). Personally, I find it disrespectful towards them (let’s say it’s only my opinion).
Friction will be far higher when the users notice some of their posts have been deleted. And some will inevitably notice at one point. Then they will ask themselves how many posts have been deleted. They will get angry, and especially angry to not even have been informed. This is the moment where the supposed “friction” of friendly notices will appear in retrospect as a really good idea 
一部のユーザーからのフィードバックです。私自身、初めてこの現象が起きました。コミュニティによって投稿がフラグ付けされたスレッドでの出来事で、そのステップに関する通知を受け取りましたが、通知のリンクをクリックして自分の投稿に移動すると、自分の投稿の次の投稿に飛ばされました。自分の投稿は消えており、スレッドから文脈が失われています。これは、管理者が基盤となるデータベースからレコードを削除したことを意味するのか、それともUIがそのような曖昧な削除を可能にしているのでしょうか？ご返信をお待ちしています。
後者です。このトピックはまさにその点について扱っています。ただし、データベースからデータが削除されるわけではありません。あなたの投稿は依然として「存在」していますが、表示されないだけです。
