It would be great if there were a way to show all Sale products site-wide in one product grid. This would pull from all product pages. Is this possible?
A possible hack is to have all products on a single page and use categories (including a Sale category) and create link pages to each category, but this is less than ideal because the navigation doesn't highlight properly (it always shows the master products page as being current, not the query-stringed link pages, eg /products?category=Sale).
Any tips to share? Maybe this is a feature request for an improvement to Commerce?