I think the quality of the blog creates domain authority and brand trust, therefore your overall rankings should increase. It doesn't even have to be a blog; it

I think the quality of the blog creates domain authority and brand trust, therefore your overall rankings should increase. It doesn't even have to be a blog; it can just be great evergreen content that presents itself resourcefully on your site. Specific (edit: off site, on site should remain important) anchor text should eventually and ideally be worthless, as then results won't be based around who got the most links that say "buy Samsung monitor" pointing at their site. I think that is a slow train coming though.