Here's why you shouldn't punt a category.
I'm going to use a 10 team league (5x5) as an example because the math is easier to follow, but the same holds true no matter how many teams.
Let's assume you'll need 80 points (or 80% of the maximum points you could earn) to win your 10 team league. Obviously this won't hold true for all leagues, but on average, it is a good benchmark. Now if you average that out over the 10 categories, and assume you score 8 points in each of the 10 categories (which should be your goal), then you will obtain the 80 points needed to win the league.
However, now let's assume you need 80 points to win the league, but you decided you wanted to punt saves. Since you're going to be scoring a 1 in saves, you'll need to get 79 points out of the remaining 9 categories. That works out to 8.78 per category. This means you'll have to finish the year with 9 points in 7 categories and 8 points in 2 categories. That's a pretty insane season and not too realistic to expect.
Whether your league has 10 teams, 12 teams, 8 teams or 20 teams, you should still be aiming for 80% of total possible points in each category and if you can obtain this goal you are well on your way to winning your league.