Hey, nice topic. Many of us have ideas, but no time/perceverance/whatever to realize them.
I might even do this by myself, but here's one idea I can think of now. Also, say if there already is a fic about this.
If this idea isn't boring, somebody do a fic about posting at a message board. It can be non-Pokemon board, it can be Pokemon-board, but the idea is we follow the posting life of one or more members in the fic. Joining the forum, beginning to post, getting blamed of being a newbie, increasing the postcount, perhaps getting moderated and/or perhaps getting banned, briefly, all the fun and sadness. It doen't have to be long, but if you think it's hard to complete it by one-shot, I don't mind it being even like 30 chapters.