Your comment is good - i.e. "Because isn't it based...?"
There are a lot of comments and suggestions to make, but they generally should start out with the words, "all other things being equal...". But when you get into the nitty gritty of an actual league, your final choices for your pitching staff may be influenced by who your opponents are choosing for their batting lineups, as well as what ballparks they are choosing - just as you said.
However, "all other things being equal", you should think about...
1. What ballpark are you choosing for your team. 1/2 of your games will be played in your home ballpark. If you are in a homerun park (say, with the ballpark homeruns higher than 1-10), then you should "think twice" about pitchers with lots of ballpark homeruns on their cards - say 4 or more ballpark homerun readings. If they are star pitchers for whom that is their only "flaw", you might still choose them. However, be aware that the high ballpark homeruns will impact on their results more than pitchers with fewer ballpark homeruns on their cards. If, on the other hand, you are in a singles ballpark (say homeruns are less than 1-10), then you may find that you can live with 4 or more ballpark homeruns on the pitchers' cards if (!) they are otherwise good cards!
2. After the waiver draft, and even after the initial autodraft, check out your division rivals hitter rosters. Also, keep an eye on roster moves after the waiver draft. In a 12 team league, you play your division rivals 24 times each. That is twice as many times as you play most other teams. If, for example, your division rivals have many high valued batters (say $3 million or more) who are lefty hitters, then you may want to choose pitchers for your staff whose balance is more "L" balanced (say 2L to 5L). Or, your division rivals have many high valued batters who are righty hitters, you may want to choose pitchers who are more "R" balanced (say 2R to 5R). The more extreme the pitcher's rating, though, the more vulnerable they are to pinch hitting or lineup switching by your opponents. Relief pitchers whose balance is rated 5R (or 5L) or more may be more suited to a specialty role (i.e. "righty specialist" or "lefty specialist") in your bullpen settings. Or, they are a starting pitcher, you may want to save them to start when facing teams who are "stacked" with that "handedness" of hitter - i.e. 5R or higher versus all righthanded lineups, or 5L or higher vs. all lefthanded lineups.
Also, check out the balance ratings (9L to 9R) for your rivals' high valued hitters. If they are "skewed" to "prefer" one hand of pitcher (e.g. left), then you may wish to choose pitchers with the opposite throwing hand (e.g. right).
3. Re your division rivals lineups - how many high value switch hitters are there? Or platoons (pairs of hitters with extreme L balance or R balance hitting)? If there are many switch hitters or platoons, and if your ballpark is "unbalanced" - i.e. tougher on one hand of hitter than the other hand of hitter - you may want to have more pitchers of the opposite handedness. I.e. PNC is tough on right handed hitters. If your division rivals have lots of switch hitters or platoons, you may want to load up on lefty pitchers.
4. Also, to some extent, check out your division rivals ballparks, and, to a much lesser extent, the ballparks chosen by teams in the other divisions. If there is a clear pattern (ie. all homerun parks, or all singles parks), then this may influence your choice of pitcher. (See #1 above). Just remember though, 1/2 your games are in your own ballpark! If that is the opposite of most parks in the league, you may still want to build your team based on your own ballpark (#1 and #3 above) and/or based on your opponents lineups (#2).
5. Check out the "other factors" on the pitchers' cards (!):
- holding runner ratings
- defensive range and e-ratings
- on their cards, how many GB A results are there (these nice readings can result in double plays for your defense!)
By the way, are you familiar with the odds of each die roll occurring on the cards? Let me know by reply to this post, if you are not familiar with this. I can give you a briefing on this if you want.
:)
Geoff