I'm thinking of resuming my desktop series, which one would you like to see first?
kernel mixer configuration, multimedia keys and suitable keybindings, music player daemon (mpd) + clients
using blacklistd(8) with NPF to enforce negate acess/ban/whitelist policies on the built-in sshd, ftpd, named and httpd servers...as a native replacement for fail2ban
TrueType fonts (TTF) on Xorg, recommended practices on XTerm and Xresources
Compiling a custom kernel
I've started studying hard at the same time, but will considered working on any of those in spare time