It would not be economically viable to maintain a custom version 8 trunk of Web Wiz Forums just for yourself given the many thousands of hours of development time that would need to go in to maintaining and developing a separate version 8 trunk.
Version 10 has the same features as version 8, and more. As version 10 has more features buttons in version 8 were moved to menu items to make the interface less cluttered and also allow for the adding of extra options to support the new features.
If we carried on just adding buttons like in version 8 the interface would be so cluttered by now it would be impossible to use. For example a typical topic has over 12 options, plus another 16 for each post in that topic.
A user looking at a page with 10 posts would have over a 172 buttons on that page and would be overwhelmed.
The page would also put more strain on the server with over 172 extra connections to download buttons making slower loading times and higher bandwidth usage.