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The site I am working on has barely any links linking outwardly, being a fairly niche site it is hard to imagine many relevant places to link to. By not linking out, can this lead to problems in Google's eyes, I guess it would be good from the point of view of inward links & their dilution but is there anything related to looking strange on Google's link graph in this way?

I have been pondering whether I am using this tag correctly or not. We have a custom solution which lays out products in the typical eCommerce style with plenty of tick box filters to further narrow down the view. When I last researched this it seemed like a good idea to implement rel=canonical to point all sub section pages at a 'view-all' page which returns all the products unfiltered for that given section. Normally pages are restricted down to 9 results per page with interface options to increase that. This combined with all the filters we offer creates many millions of possible page permutations and hence the need for the Canonical tag. I am concerned because our view-all pages get large, returning all of that section's product into one place.If I pointed the view-all page at say the first page of x results would that defeat the object of the view-all suggestion that Google made a few years back as it would require further crawling to get at all the data? Alternatively  as these pages are just product listings, would NoIndex be a better route to go given that its unlikely they will get much love in Google anyway?