Hi BJS, normally the most important page of a website is the homepage not just because it is the homepage but because is the most linked page interanlly where all the juice flows, so the pages which are nearest the homepage are supposed to be the most important too. The farest they are from your homepage, so the more hidden they are the least important they are.
Moreover if a page is widely linked internally the more important it should be just because if many products belongs to a category, the most this category is linked through breadcrumbs and the more content it has.
Don't be concerned about having products deep in structure is normal that for the most competitive kw categories are the pages which are focusing on those terms because these are the most useful pages for users to filter and find what they're looking for.
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