Quality increases the inventory size of cargo wagon and the capacity of fluid wagon. This mod can make trains more efficient.
Small changes concerning balance, gameplay, or graphics.
Trains are great, but what if they could do even more?
Just wanted to let whoever know instead of making another quality wagons mod, there's a new API in 2.0.50 that lets you override the inventory size of containers and more importantly wagons, which makes doing this mod a lot easier.
https://lua-api.factorio.com/latest/classes/LuaEntity.html#set_inventory_size_override
There is even now an build in option to just enable: https://lua-api.factorio.com/latest/prototypes/CargoWagonPrototype.html#quality_affects_inventory_size