I play the server and use my brain plenty. If the issue is that it's meant to take time to transfer items for some nebulous edge case balancing reason, then make it so there is a 0.5 or 1 second timer for each item trasnferred but still implement double-click trasnfer/ctrl-click transfer. That way you can keep the same time requirement, but take out the uneccasary clunky and labourious act of individually click, drag, unclick, click, drag, unclick over and over and over.
I guess my question is
How would impletmenting this make the server worse? what problems would it cause? if the issue is that it's meant to take time to transfer items, then what would be wrong with a 0.5 sec timer per item while also implementing better trasnferring mechanics?
How is the server improved by needing to manually drag each and every individual item?
Another issue is that non-American players have this problem even worse. If you have a high ping, it takes even longer for items to trasnfer, and you have to actually wait a second or two for one item to change inventories before you can drag the next.