What bothers me is the truck station capacity. The large truck station has a limit of 12 units per line. It makes no sense when you have trucks that can transport 16 units. Trucks can never be fully loaded. If you do set the line to full-load, then something down the line will break and eventually the commodity will bypass your station.
I have gone through all the mdl and lua files, but capacity is not a parameter that can be set. This has bothered me so much that I have run the .exe through a disassembler looking for hardcoded compares with ’12’, but alas, nothing obvious was found. I would hope that future patches expose all the internal constants and the lua interface is documented with a rich API. If we had this today, it would be possible to write widgets which could address some of the biggest gripes with the game; for example automatic vehicle replacement.