Hello,
I'm the administrator of The Big Blue Box of Timelord Lore Wiki, or TBBBTL. Quit a mouthful, I know; but I think it has a nice ring to it. My wiki does not compete with this one; instead, it compliments it. TBBBTL covers only Doctor Who fan theories. Fan theories can often serve as inspiration for fan fiction. Maybe it will serve as the basis of it, or maybe thinking about them and the longstanding questions they try to address might just help get the gears in your head turning and lead to an entirely new idea. As far as I know, it's a pretty unique place. Please come check it out and let me know what you think! Contributions are always welcome.
Sincerely,
TrumpetofTheSwan