I have tried all of the scenarios, and I only gave up on Topsy-turvy because it is impossible, but it is funny to watch them tip over really slowly on the first corner. I really liked both of the Heavy Cargo ones, and I think a Heavy Cargo with fuel efficiency as the goal would be fun. Built Gavril Tough is fun. The scenarios are the perfect length.
I played all of the scenarios in this mod pack and they are all great and sometimes difficult. There is one problem though, When I played the Heavy Cargo B, I had brakes all the way through the route. I looked in the vehicle files and the front brakes on the semi were only removed. It would be a big difference if you had removed the rear ones as well. That would lead to having to shift into reverse to stop. This is a great scenario pack.