I made a suggestion regarding fiction in the main 'lets discuss the TWG's progress' thread. SE, please read that and let me know what you think. Let me respond here to the idea you proffered.
We need to think very hard about this suggestion. My brother makes his points crudely at times, but he does have some valid concerns. There is an air out there that a site with fiction on it--especially fiction written with gaming themes and written by a member of the site's staff--is a sign of an amateur site.
No, I'm not saying that SE is amateur, or that his writing is bad. It's actually pretty good. I just think that we have to think seriously about the implications of including fiction on the site. I am only one person, but having worked a little bit in the field, I am much more skeptical of a site that includes amateur (meaning unpaid, written by people without serious field credentials) fiction.
I would be very wary of publishing amateur staff fiction on the site, no matter who it comes from. I just have the sense that articles imply 'We are an authority on this subject. Listen to what we have to say.' While fiction implies 'This is my story. Isn't it neat?'
The serial idea, however, does lend some more credibility to the suggestion. People are accustomed to serials in print-form nonfiction genres. If SE were serializing, it would feel more like a weekly department than a bad fanfic site. If we do include staff fiction on the site, I think this is the only serious and respectable way to go about it.
--Edit. Forgot to give my thoughs on the original post! I like the alter-ego ninja one. Whatever you write, if its comedic, it also sits far better with me. That also makes it feel more like a department offered for entertainment value, as opposed to staf fanfics. Oh, and I oppose the idea of the round-robin story. This is better left for the forum. Front-page fiction should be more professional.