I'd like to see a board skin manager in the skin box on the admin control panel.

something where you can see all the boards and apply what skins you want to the boards that you want. (with a radio box perhaps). Because i have over 160 boards on my forum and it can be a real pain to manually set each one.

Agreed.

Tweak that silly amount then.

Agreed. Skins should be Set in Forum Settings.