I only watched the first one. Firstly well done for being brave enough to take old Land Rovers on such a long trip and for driving through Paris, I noticed a C5 nearly take you out.
I'm sure this series of videos has great memories for you and the rest of the crews. If I was making a video like this I'd try and mix the road footage with some other footage of the places and people that you come across. It's hard to make a video like this interesting to the casual viewer but you seem to be getting some good viewing numbers.