When I visit the desktop version of the forum, this is the top section of the page:
The image of the vista is very nice but it’s too short to cover all the length of the screen and that “repeating” effect is not very pleasant.
What about creating a new image specifically designed for the forum header? This community has a few great graphic artists in it who might be interested to provide a candidate picture and the community could use an anonymous poll to vote for the favorite image.
Even if you love the current picture, the community-provided image could be used for just a few months and the entire initiative would be just a way to have fun and to contribute to the forum in a non-textual way.
What do you think about it (that “you” includes the forum owners)?