I read an in depth article a while back - maybe on the website of "football focus" which in essence said - with much considerable supporting documentation that relative to Offensive Line prowess/success it is significantly better to have say 5 average or slightly better then average linemen THEN for example 2 all pros(or the likes) and then 2 below average etc. The article basically said an offensive line is only as good/ strong as its weakest link or links
and hoping if a good lineman is available at any of our picks, that we will still be picking him