Absolutely, WICKED good list
I really love all these kind of old-style towns/temples/places, so there are a few really nice suggestions here.
A good onsen was already on my list. Last time I was in Japan I went to one in Nikko (dunno how good it was by japanese standards, but it was pretty sweet).
I only hope I can visit all these places. But as I do have some holidays (mainly between 1st and 2nd semester), there should be time.