Actually because some wikis do have extensions that create talk pages for newly registered users, we currently have potentially a lot of user or user talk pages of globally oversighted users created and showing the suppressed account name; hence making the global oversight useless. Please do run a script that fetches the Meta-Wiki suppress log and make it go crosswiki checking if user or user talk pages do exist of that user, and if so, make it suppress them.
I wonder if we should also extend this to globally hidden accounts. I'd say yes too, because a lot of abusive names were removed in the past prior of global oversight by hidding the global account, then going cross-wiki and block-suppressing the username in question.
Thanks.