I agree that this is a good idea. I do know that the WA powers have a long list of things they would like tutorials on and have on occasion asked for these to be created by the community as well as internally. The set of tutorials we have now is a good start but I think if we had a public wishlist in the forums we/they could better gauge interest and they would be less likely to fall through the cracks.
We could then in our spare time 'give' as Craig puts it.
I do quite a lot of customizing of the admin areas of Powerstore and CMS. I spend countless hours working to solve issues and find what parts of which file needs editing etc. I'd like to be able to hand that info off to others that may benefit from it but it would also be nice to know if that would even be useful and time well spent as a tutorial. We could use this space to gauge interest in that regard as well.