Hi everyone,
I play mostly in single-player mode. In order to make travelling huge distances less tedious, I use trader carts as "fast travel" waypoints by manually adding a warp block in Creative mode every time I discover a trader, and then switching back to Survival.
I would love to see a world option that allows trader carts to be used as a "fast travel" network. You could only fast-travel between trader carts that have been discovered. Especially in single-player mode, this would really be useful for exploring and trading and would take away a lot of the "grind" of travelling back and forth over huge distances. In my opinion, this should be an option that can be disabled, especially for servers.
Have a great day!