(top image) - A version of the current site with shrinked header, so that more content is visible. This would follow the design of the current page.
(bottom image, left) - A design that would fit the forum design, but it has less " fancy image" in it. This would require new design rules.
(bottom image, right) - Mobile version of [2. (bottom image, left)]. Maybe this could be improved with some kind of menu button to the right: http://i.imgur.com/fOivKqr.png