Looking at Rick's itinerary priorities for 7 days:
I'm coming up with:
Munich.
Salzburg.
Reutte, Austria (Tirol).
Bavaria/Rothenburg.
Rhine/Bacharach. Trier was also recommended.
However, I'd rather stay in each hotel 2 nights minimum. 2/3/2 nights each. This is July. Thinking about Munich and/or Frankfurt for flights.
I'm enamored with the idea of a car to see smaller towns off the beaten path. But I can also really see the convenience of sticking with train for less hassle. I'm interested in castles, architecture, scenic beauty, some hiking.
Should I cut out some of these destinations or do some as a daytrip? Which cities/areas would you focus on? Where should I research? Is it time to BUY the guide book?