I would like to see this option too. Another thing we need is to see products that uses the item. We can see that X needs Y but there is no way to see what products need Y.
Or, in other words, looking at product Y, what products are available that are options to Y? Say if you’re looking at a dress or hairpiece, what alternate texture sets are available for it? That would be nice. The old store had an “Accessories” link for each product, but it was sometimes less than useful.
Addenda: It appears once you get into one of the new store categories, THEN you can select a vendor. This does not do what I need. For example, I cannot find RawArt’s Lizardians by going to Shop > Creatures > RawArt. If I didn’t already know there was a Lizardian, it would be much harder to find than going through a dozen or so RawArt products and seeing the Lizardian. (I already bought the Lizardian a while ago, great item.)