Cheekily -> off the top of my head, I'd love to read stuff from: Mark Obscena (keeto), Aaron Newton, Ryan Florence, David Walsh, Garrick Cheung as the most notable technical writers within the mootools community. I would also venture Darren Waddell would probably be very good at it as well as Olmo Maldonado, Daniel Buchner, Sean McArthur and of course, Cristoph Pojer and Arian Stolwijk :)
I just hope any of the aforementioned will have the time to spare, think how good this can be for raising the profile of the library. Best regards -- Dimitar Christoff "JavaScript is to JAVA what hamster is to ham" http://fragged.org/ - @D_mitar - https://github.com/DimitarChristoff