The best point raised to account for the very narrow margin of home field advantage is the strategy of resting your good players more at home. That way you can manage around their absence and hope to make up for it. Good point.

It did get me wondering: Has PB always performed this way ? I wasn't sure but it seems this phenomenom has been recent, the last few years or so. So I went back to 1997 ( I picked 1997 because I wanted to go back far enough to see if this was a recent thing, but I wanted to stay away from 1996, PB's first year which had some difficulties of its own) and did the same thing: I totaled up each league to see if more home or away games were won. This year there were 75 more home games won in 25 leagues, 3 more home W's than away per league. 14 leagues had more home victories and 11 had more aways (56% Home- 44% away).
In 1997 there were 13 leagues with more home wins, 6 with more aways and 1 tie(65%-30%-5%). The total difference was 258 more home victories than away, 12.8 per league.

An average of 12.8 per league versus 3. 65% versus 56% for home victory leagues. I'm not a statistician, I'm sure some of you are so feel free to jump in, but these differences seem significant to me. They could support the argument that some tinkering was done to the PB pogramming to aid the visiting team betweeen 1997 and 2000. Then again it could be random ...