I like the idea of it, but practically I'm not sure how I'll travel, I might do all of Europe for 22 days by train, with an InterRail ticket, but its where to actually camp, because usually campsites are a bit of a way out of cities.
I might start looking into it more seriously for this summer. I could go to the Monterrat mountains and I've never seen the alps in summer so that could be interesting.
Oh that just got me excited, time to plan!