Yes to this! There need to be more options for pricing and minimums. Things like item-level minimums and support for case quantities. Yes, you can make your listing be for a case/set (that's what I've done with all of mine.) But then there's no way to accurately display retail and wholesale price per piece, and buyers browsing by price do not have any way to compare apples to apples when looking at a shop that lists by the case and one that lists by the piece.
Selling wholesale, for most of us, is only profitable when bulk quantities are involved. For some people that will simply be a certain total quantity of items or a certain total dollar amount. But for many of us, it means minimums of each item or each type of item, or cases of certain preset quantities. We need a marketplace that supports these different options.
I think EW is doing a lot of things right, so I don't mean to complain. But this is one area that is seriously lacking. And it's surprising, given that case quantities and item minimums are pretty standard in wholesale. I consider this to be a basic level of functionality that EW has ignored, and if it's not addressed I don't think I'll be staying on the site when I have to pay for it.