What's counterintuitive to me is having pitchers who give up a lot of baserunners be able to survive in a HR park.
In theory, you're right: outs count even more in highly friendly hitter environments. But this was a 60M league, so there were a lot of outs of many hitters' cards too. I do believe it can be successful at 80M, but my team whip wouldn't be as low, that's for sure. Playing in Miller park instead of Coors gave my staff 6 more outs (out of 216 chances). Playing under a good defense sure helps too. And playing with 7 pitchers allowed me to have the right matchups in most games. So, for Carlos Martinez, for example, I would use him almost exclusively against teams with 5 right-handed hitters or more. If you assume a 40/60 ratio, then his overall card allows less roughly 29 chances of on-base (notwithstanding ballpark singles), just a bit under the psychological ceiling of 30. You can see on the lefty/righty page that Martinez faced 48% of lefty bats, but this number is inflated by his use of mop-up against cards loaded of lefty hitters.
But you're right that the ideal pitcher for hitting-friendly stadiums is one with low whip. However, most of the pitchers under 2M with a low whip typically allow many homeruns---and thus are not good value for ballparks with high homerun chances. There are exactly 20 non-500K starting pitchers under 1.5M who allow 2 BP homerun chances or less on each side, and without a single exception, they all allow more than 30 chances vs at least one side of the card. E. Santana, who was my "ace" in the 7-men rotation ("ace" in that he's the one who was getting the call regardless of the matches), is second best in registering outs among those 20 pitchers, second only to Swarzak. Actually, I had drafted Swarzak, but couldn't hold on him because of money issue. But I believe J-Pav used Swarzak a few times with good success, I seem to notice.
Anyway, bottom-line is this: it all come down to finding good values. I'm sure you can have success by establishing an all-ace rotation, and rest your offense on nice values, just as you can spend the most you can on offensive threats, and rest your rotation on bargains and on giving the ball to the reliever as fast as possible.