In T5233, a feature was added that adds a cookie to the browser of users who attempt to edit using a locally blocked IP or account. If they then attempt to edit while logged out or create an account, the system will block the attempt.

The GlobalBlocking extension should also have this functionality. This is so that global blocks can have the same effectiveness at preventing further edits as local blocks.

It may also help with mitigating the impact of abuse of users who use Temporary accounts as the system could apply cookie blocks to blocked temporary accounts.