http://mathoverflow.net/questions/33427/roadmap-to-a-proof-of-the-atiyah-singer-index-theorem-which-uses-k-theory

http://mathoverflow.net/questions/29499/yet-another-roadmap-style-request-a-second-bite-of-the-cherry

http://mathoverflow.net/questions/21552/roadmap-for-studying-arithmetic-geometry

http://mathoverflow.net/questions/28158/a-learning-roadmap-request-from-high-school-to-mid-undergraduate-studies

http://mathoverflow.net/questions/35288/undergraduate-roadmap-to-algebraic-geometry

http://mathoverflow.net/questions/1291/a-learning-roadmap-for-algebraic-geometry

@VP: Those are all the roadmap requests I could find, so any subject you don't see on that list has not had a roadmap request.]]>

Of course, there's the problem that people won't know what the different tags "mean" if they have meanings that are only apparent to people who read meta.

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