Here's a bunch of new and old ideas
"Totally Tubular" - place to find all that tubular lore and advice (exists)
"To Brooks or not to Brooks" - everything about, well, I think you can get it
"Do these handlebars make my butt look big?" - Style and ergonomics
"C&V path of righteousness" - what's proper in equipping classic bikes?
"What's classic, and what's vintage?" - well, is it really classic or not?
"Classic-based hot rods" - retro frames with modern equipment, a popular fringe movement (exists)