I am going to second the ability to delete devices added via integrations. This is a no brainer. Nothing drives me crazier than setting something up one time and not having the ability to redo it from scratch. This is a really bad user experience.
I recently updated my Home Assistant, and they changed the way device IDs are handled (specifically with the Emulated Kasa integration), and this has led to so many duplicate, orphaned devices in my list. I discussed in this thread, and this github issue was shared there. The commenter blamed the issue on Sense three years ago with “they’ll maybe fix the bug but don’t get your hopes up” with no other workaround, and my tests also validate this is an issue on the Sense side.
I know it’s a bug, and probably affects a small subset of users, but I find it absolutely wild that removing an integration leaves junk behind and does not properly do a cleanup. It should remove all integrated devices and then re-add anything it discovers from scratch once the integration is reconnected. By unlinking, I a already lost my usage history, so it’s bananas the devices still come back orphaned.