Vacation planning

So, every once in a while, I get a question from a colleague or acquaintance about vacationing in Japan. We have been there quite a few times ourselves, and it’s a big country, so people want to know where to go and get some “insider tips”. Often, people have already done some homework, and they can point to some trips prepared by tour operators.
I get that you want to see a lot of different things from the place you are visiting — especially from the Netherlands, Japan is far away, and I guess most people would visit only once. But those trips have a lot of travel — and sitting in the train is interesting the first time, but after three trip in a Shinkansen, you know the drill and I think you would be better served by spending more time seeing the sights. And why would you schedule an excursion to Nara and Fushimi Inari on the same day? Both those places can be enjoyed for a full day by themselves!

I guess that I’d rather spend some time at a place to really be there, instead of hurrying along, take a few pictures and then go to the next place. It makes it hard for me to give advice. Perhaps I should think of a ‘recommended itinerary’ that I can just give to people as inspiration, as a starting point?