Heads up on your landing page. I didn’t know what I was supposed to type into the search box. Category, item, zip code?
It would help to preload some products (popular/trending at the moment perhaps?) I think or show some categories. So that it looks more like Amazon or any single shop, but the search gives you results from many.
I've wondered before why Shopify doesn't do this fwiw. Why isn't there a central shop entrypoint for all Shopify shops? Bit of crossover with Etsy perhaps, but probably the more serious end and beyond.