I've been debating this, for my league as well. Standard 5x5 head-to-head Yahoo! Pitching is 2SP, 2RP, 3P, with rosters locked for the week on Monday.
I was planning to require 4SP, 2SP, 1P, because if a team suffered a huge tragedy (had two starters go down in the same week or something), it would suck to automatically lose all the pitching catagories. But then again, if two starters went down, I guess you probably should lose all the pitching catagories.
Ah, thinking out loud on the forum boards. Another thing I can do online, but not in real life without looking crazy.
Is everyone pretty sure that 30 is the magic number?