I'm basing this post off the BDL article that brought up the same question. If you wanted to see that article, you can easily find it by going to the Yahoo Sports' site.
That aside, I do think it's a nice topic of thought/discussion: what statistic(s) would you like brought into the NBA box score? While statistical junkies have plenty of sources for their stats, I do think it would help if the official box score started keeping track of one/some. Who knows, maybe a mainstream acknowledgement of a statistic would help bring more focus to that specific stat?
The BDL discussion focused specifically on screens in hopes it would encourage more people to set them. I would be happy to see some kind of "secondary assist" statistic that rewarded people who set up the person that got the assist. In general that would reward passing.