Honestly, some of these seem a bit pointless, but I see the merit of having a replacement commodity that's decently profitable for the times where there are no ores around.
I suggest maybe overhauling some od the routes in the future so they function as an additional bonus between ore dropoff and pickup points. E.g. they should be short, local routes that boost the income when shipping ores with the RP appropriate shipping factions. (Gallia comes to mind with the Aluminum dropoff being on one side, and all the ores on the other)
Otherwise, a welcome change to make hauling regular stuff more worth it.