TYPO3 Core

TYPO3 still has a pagetype "Recycler" (Doktype=255) that was used as a sort of "retention folder" before definitive deletion of pages. Unwanted pages had to be manually moved inside this special kind of Sysfolder.
This feature has become obsolete with the introduction of the Recycler module and can cause confusion for the editors.

Moreover, as far as I have seen TYPO3 excluded doktypes > 200 from frontend rendering, but this limitation is no more (See https://docs.typo3.org/m/typo3/reference-coreapi/10.4/en-us/ApiOverview/PageTypes/Index.html)

• The doktype and its occurrences should be removed from the codebase (it is still cited somewhere in indexed_search maybe?)
• A "migration wizard" should be supplied to remove these pages (or update their doktype to 254 (sysfolder))
• feature #99418 should be already in place before this task IMHO