We would like to ride the Pamir Highway again. Some good videos by people who have done the less difficult route, following the Pyanj river from Dushanbe to Kalai-i-Khumb:
https://www.dangerousroads.org/asia/tajikistan/430-pamir-highway-tajikistan
https://www.dangerousroads.org/asia/tajikistan/430-pamir-highway-tajikistan
The aim is to drive to Turkey, Iran, Pakistan, India and Nepal before visiting Tibet again, and then through Myanmar, Thailand, Cambodia and Vietnam before returning via China and Russia.