Each Stadium

The phenomenon of people ostensibly being interested by the fact that Sosa has now set the record for homering in the most major league stadia is somewhat curious to me. Given that there are more major league baseball teams than ever, and that the bulk of them have switched stadia in the past 15 years, and that there is now interleague play, it should come as no surprise that league-switchin' sluggers of the current epoch (Sosa, Griffey, McGriff) top the leaderboard.

But what I'd really like to know is why only home runs are given the 'each stadium' record treatment (as far as I know). The lists I'd much prefer to see are who has committed an error in the most stadia, who has GIDP'd in the most stadia, balks, catcher interference, et cetera.