I guess every scoring format is criticized to some extent.  Head-to-head leagues with a playoff system can be bad for a team that dominates a league yet has one bad week during the playoffs.  Also, during the playoffs a really good team could go up against someone with a ton of 2-start pitchers.  That by itself can make boost above average team over the hump and onto a league title.  

Roto leagues are probably more fair in that regard, but it is really difficult to catch up should your team fall behind early in the standings.  And, as the seaon progresses, it becomes more and more difficult to catch up.  This can make teams toward the bottom stop participating.

Maybe there should be some way of having first half and second half winners in roto and head-to-head?  Shoot, there could be a mini playoff right before the All-Star break.  Then teams could get a fresh start concentrating on the second half of the season. Maybe even have first half and second half winners combie to have some sort of end of season playoff in head to head leagues?

Then on top of this is the issue of which categories to use and/or how many points should be awarded for each category in head to head play.  Should OBP always be used over BA? Or would using both be better?  

And what about categories like being hit by a pitch for a batter or holds for a reliever?  Maybe "quality holds" needs to be added as a new category?  And then there is the famous One Out Save and its evil cousin, the Three Inning Save.

  Should we have quality saves?  Heck we already have quality starts, although that can be bullpen dependent.  Besides all that, why can't my NL pitcher get credit for when he hits a homerun or otherwise has a nice day at the plate?   How can that not be important?  Sheesh.

Are there any scoring formats anyone simply hates or thinks is better than all others?  What about categories?