User blog comment:MrYokaiAndWatch902/This is why I can't have good times on UCP./@comment-47075028-20201010223718/@comment-24258073-20201012051528

Nothing will at this point. All I can suggest is providing feedback and ideas on how to improve the UCP platform. But there is no chance in bringing back legacy or any of the features that definitely won't be added to UCP. This includes but isn't limited to Special:Chat, Special:Forum, Special:Insights, article comments, and message walls.