Requested feature overview description.
Inspired from Derpibooru, a feature to merge or redirect duplicate/inferior images.
Why would it be useful?
As so many images are being deleted due to someone else uploading better versions, it's kind of an eyesore if the image you faved or used as your avatar, becomes deleted and leaves you with a message of "duplicate/inferior version of #[betterpost]".
It's also a bit of a hassle, at least on avatars change the settings and replace the post number of the better version, whereas merging/redirecting the image removes that hassle.
Also, to add a brutally honest opinion, seeing deleted images for better versions feels like a waste of database numbering.
What part(s) of the site page(s) are affected?
Posts and avatars.
Updated by NotMeNotYou