I'd like to recommend my overlay "doctaweeks" for inclusion in layman. It contains development tools and libraries not found in other overlays and I often push updated packages before they make it into Gentoo. It's hosted on github and my own site: https://github.com/doctaweeks/junkdrawer-overlay or git://danweeks.net/junkdrawer-overlay.git Thanks!
Sorry for the confusion, the overlay name is "junkdrawer", not "doctaweeks".
Looks fine at a first glance. Could you wrap up a nice, short description for the list?
"Various development tools, libraries, and patches not in Gentoo (yet)" Thanks, Michał.
Added. It may take a few minutes for the online copy to sync.