Please keep the flat format and don’t introduce whizzy crap. Too many website seem to put glitter before usability and content. The only things I’d like to change are:
1. How the site works on mobile devices. Manually zooming all the time to click links or get the threads to fill the width of the screen gets old really fast, as does readjusting the text entry box.
2. When randomly logging people out it would at least be polite if the log in box appeared first rather than having to wait for all of the ads that I specifically pay to avoid appearing before I can log in.
3. The ability to set my desired font size on mobile and desktop. Quite often mobile sites use bizarrely large fonts. Maybe I can change this in my browser but I have no idea how.