How dare you !
I started again in 2.5 and it still works great, every option included !
Are you sure you are using it right ?
The mules currently choose a trade based on total number of units bought or sold by the stations. That favors small volume-high quantity wares, so I tried something different.
In my latest version, I use the total volume of the buy or sell order. Works even better.
Next steps are adding options for two-way trade between station (testing now), and uploading the mod to the Steam workshop (with proper credits to leecarter ofc, and he's welcome to do it himself should he feel like it ).
I'll probably still come and post a version here in the thread, but since I can't edit the OP it's not great.