For the main website:
A background music theme, can be any simple tune, it goes well with flash-based made web pages, I'm sure you'll think of some neat tunes for that to use! They play in the background of the page load, and usually have an option where you may if needed disable the tune anytime. It would be unique to see more places with some familiar tunes.
For the Forum:
Currently, this is an idea in progress, but for writers, they could have their own section of the forum to write big stories, or share a link to a full page, send it in a file, whether it be any of these, they could be sorted into one category.
For now, that's all I've come up with in thought. In any case, good luck!
P.S., I can't wait to see the coming shop feature on the main site, I hope it goes well.