I mirrored my family/friends league with ours with small changes here and there, and this is what I have it set up as this year:
(I only used the new options available for defense)
Defense/Special Teams
Sack 1
Interception 2
Fumble Recovery 2
Touchdown 6
Safety 4
Block Kick 2
Points Allowed 0 points 14
Points Allowed 1-6 points 8
Points Allowed 7-13 points 5
Points Allowed 14-20 points 2
Points Allowed 21-27 points 0
Points Allowed 28-34 points -2
Points Allowed 35+ points -5
4th Down Stops 1
Tackles for Loss .25
Defensive Yards Allowed - Negative 10
Defensive Yards Allowed 0-99 6
Defensive Yards Allowed 100-199 2
Defensive Yards Allowed 400-499 -2
Defensive Yards Allowed 500+ -5
Also I do -.5 points for a QB when he gets sacked.