Brion -- Perhaps a couple of core MediaWiki techs can be actively involved
in hacking days plans. I'm sure b6s would appreciate their input and
energy; and it might be a good rule of thumb for future hacking days.

Thank you for such kind consideration, Mr. Klein.

Also, if people who like hacking MediaWiki (or MediaWiki interfaces and
skins) but aren't core developers or techs, want to get together and hack,
that sounds like a good idea to me. This would be separate from an event
designed for the core developers to hang out and have fun, but this
doesn't mean they can't both happen.

--SJ

I've already asked one of skin developers, Mr. Paul Gu. He may lack of the
schedule of his semester and firefox activities, but there's still a chance to
invite him and more skin designers on
http://meta.wikimedia.org/wiki/Gallery_of_user_styles

Therefore, if we can have Hacking Days Extra as parallel tracks besides of
MediaWiki core development, it is possible to group some people to hack
for skins. After that, it is optional to MediaWiki commitees to pick up some
skins, and skin designers may also have chance to provide some thoughts
about the template to the core developers: they can be happened at BOF
time to prevent the risk of disturbing each others.