I don't know, that might be a good idea. Like how there is a request section for codes and PC, people might find it useful to be able to request a tutorial to the GFX members on a picture that they want to accomplish. There is only a few problems that I can see.

1. Not too many people would actually need to request a tutorial.
2. I don't know how many GFX members would actually take time out to create your tutorial.
3. There is already a request section in the GFX section, but as far as I know it is only to request GFX members to make you a picture/signature.