A complete set would be impossible because many of the cards are so scarce and in collections that will never be liquidated that a few collectors try for a player set which I believe is in the 500+ card range...which is also really impossible for the same reason above. There are lots of collectors who collect by team or try to get every pose for a certain player.
As far as grading goes, most N172 collectors that I know don't worry about who graded it because both PSA and SGC don't seem to take the actual photo on the card into account when grading it, and faded cards can have much higher grades than cards that might grade a 1 or 2 which have excellent clarity. IOW grading doesn't seem to matter to most Old Judge collectors.
edited to add: Seablaster beat me to everything I said in this post.
