Generic Bulk Loose Storage and Conveyer Input for Large Ore Sorter

With the addition of rail, I think there should be a generic bulk loose storage (take everything in the truck like dirt, coal, rocks) that can either then be transported by dedicated trucks to an ore sorter if you want do it that way, or more efficiently a rail system. Also in order to make that even more efficient, include conveyer inputs to the Large ore sorting plant.
How i view this working is the generic storage has say 50% dirt, 50% iron ore, in either the truck or rail car, you would get 50% dirt, 50% iron ore loaded that is then delivered to the ore sorter for processing

I agree, there needs to be a "mixed allowed" loose storage and a conveyor input into the sorters. even if you make it a mini stacker that attaches to the sorter as an upgrade.
Also, please consider adding a reject any loads not set in the sorted items next to where you've got the reject single item loads,