Fun read. I don't have the time now, but it would be cool to compare what Dunn did last year - swing more, drop his OBP, raise his average - and see if the trade off of hits for walks was worth it. I think wOBA already does this because it uses weighted values for the outcomes of plate appearances. It probably incorporates the "A walk is 65% of a hit."*
I took a quick look at Dunn last year v year before. Sure enough - average up a lot, ISO and SLG up, walk rate down a lot, Ks up slightly - wOBA drops.
* Imagine a bunch of sabermetric bench chatter, guys clapping their hands, saying that.