Not possible. B, C & E sites run on the same software as this site, albeit a newer version.
The company who made our software, vBulletin, was once the number 1 developer of forum software. The last few years they have become, IMO and the opinion of many others, one of the worst. This version and the version the other sites run on are no longer being updated or developed for. This leads to many problems that will only grow as time goes on.