I think that cargo disks should be buffed in a way; right now the speed is very slow even usingone of thefastest disks. My ideais that cargo disks should be based off the standard speed of the tiered disk plus the players current strength.
For example say you are using a marble tarbash - you get the base speed of what the disk is +1 additional speed for every 100 current strength the player has. If the player has 800 strength, they will gain +8 speed while dragging a disk.
I think that this buff would be nice to have to cargo disks since the whole idea is that you are pulling around a heavy object and that it should be based off your strength. The +1 speed is not asking for much and I think it would be a generous addition because the speed can add up and be very helpful, especially in areas that do not have road bonuses.