This is different from https://feedback.vrchat.com/feature-requests/p/automatically-generate-impostors

Please regenerate impostors for avatars that had them generated for them. There's hundreds, if not, thousands of avatars that was generated back when it was full of issues, rather missing body parts, missing THEIR WHOLE BODY or incorrectly scaled. For this to take less time and resources, if possible, only regenerate impostors for avatars that are actively being used, like equip within a month or 2 time-span, or if their impostor version is very outdated