Any link to such a discussion? Is this a request to add such a setting to the MediaWiki codebase itself?
Or is this some request specifically about configuration settings for de.wikipedia?

sorry, forgot to mention that: The core of the discussion is at https://de.wikipedia.org/wiki/Wikipedia_Diskussion:Sperrpr%C3%BCfung, but our new procedure caused disturbances and discussions in several places.

Personally, I think that this option is a possible benefit not only for de.wikipedia, but I would not mind if it were only implemented in my home wiki ;)

I think it would be great if we realise it that way:

• Is optional, each wiki can activate it via config
• There is a sysmessage (MediaWiki Namespace), where you can define the page, which the user can edit, if this parameter is set (for example: Wikipedia:Appealing_a_block, or in other languages)

Yeah, it's a bit dewiki specific, we search for a good possbility to appeal blocks. Do you think that we need community consensus to develop, or to activate it?

Isn't this the opposite of the task you merged this with, @Ricordisamoa? That task is about banning users from only one article, this is about banning users from everything except a configured article.

In T119795#1836143, @Krenair wrote:

Isn't this the opposite of the task you merged this with, @Ricordisamoa? That task is about banning users from only one article, this is about banning users from everything except a configured article.

Aren't per-page exceptions (either granting or revoking permission to edit) likely to be implemented similarly?