I know this is a web2PRINT store, but we frequently get asked to put items on the store that is apparel or other promo items. We currently cannot make the store behave like a regular retail store (where you can choose from a dropdown of sizes) AND have it pull from inventory based on the dropdown size. So choosing one product but choosing a size of the product requires a separate item for each size OR putting the items in a kit and it becomes a clunky ordering process. If we could link dropdown variations in a calculator to an inventory item, that would be ideal.
Correct Jim, Suzanna I've merged these two together. Apparel will be a focus area for development going into 2020.
This idea has already been proposed. See the following link: Improved System for Apparel
It might be best to consolidate your vote with that idea, since it already has 19 votes.