*revives dead thread*
Definitely considering this. If you want to be recognized at a con, it would probably have to be Cupcakes level of fame, but I'm not wearing my fanfiction cosplay for a con, just the internet.
I've seen a lot of fanfiction cosplays at cons, and I personally enjoy them a lot. There's a lot of creativity and effort that goes into it, and I think it is really cool and unique.