I find your dismissive attitude towards any type of cycle touring not fitting your preconceived notion of what's interesting pretty disappointing.
It's not a dismissive attitude nor a preconceived notion of what is interesting. I think the OP seemed to be leaning towards a Euro trip, not a trip across the Nullabor Plain! A "challenge" to me in western Euorpe would not be there for me with van support and I am 54!