I was chatting to a mate at work about going on a mini tour. He is a wing dinger and has been on stacks of tours. He told me about this place:
http://www.grd.be/motorhotel/eng/frame.htm
Looks like it could be worth a visit as it is easy to get to for an introduction to touring europe.
Take a bimble there on the first day then head where your heart takes you for the rest of the time.
When I plan to do it I am going to make as few plans as possible. God knows where I will end up but then that's going to be part of the "adventure" for me.