I was wondering if you could add a priority system in, allowing you to pull items from lower priority containers, to higher priority containers.
Also i was wondering about custom data and if you might change it to make the strings read from there instead so rather than naming a container "Welder [COMPONENTS]" you would name it "Welder" and then define the string "[COMPONENTS]" in the custom data tab of that container.
Sorry if it's not possible or too much work i don't know much in the way of practical work in programming blocks.

I was also thinking about a priority system myself for containers.
So if i understand you correctly you want to have 2 containers with say [ORE] labels that you can set one as the one to fill up first? , or do you have a specific problem that this extra feature will fix?
The second suggestion is possible and i will look into that as a extra mode for this sorter should cleanup the terminal names a bit.

Yeah thats what i was thinking thanks :)