Currently when I try to craft items, I can only add the exact amount of resources as required and produce 1 item. (It could be that I am missing something).

Recommendation: Make it so that you can add multiple resources and craft multiple items. There would be a counter so that each item would count as a separate crafted item. I don't think having to keep dragging items over adds anything to the game.

Currently, the tool goes back to your pack and you have to redrag it over.

Recommendation: The tool should stay there until you close the window.