One aspect of the rules I think could use some review is defensive pass interference. As close as the refs are calling that one these days, I'm beginning to wonder if those penalties shouldn't be a flat 'X' yards, be it 10, 15, or whatever rather than putting the ball at the spot of the foul. Example from the Piit/Balt game last night....
A Ravens WR was running a deep route and had about 1.25 steps on the Steelers' DB. DB is running full out trying to catch up. Ball gets thrown up, but it's underthrown just a hair. The Ravens' WR slows just a smidgeon, and as a result, the Steelers' DB runs into him prior to the ball's arrival. By the letter of today's law, it was DPI. But it was ticky-tack. The DB wasn't reaching out and knocking the WR's arms down or anything like that....it was simply a matter of him trying to catch up and the WR slowing just a hair.
The result was something like a 42 yd penalty. That's an awful lot of yards for what was basically both guys doing exactly what they should have been doing.
Where it gets really inconsistent is in what is sometimes called 'incidental contact'. You see it a fair amount where a WR and DB are running virtually stride for stride and their feet get tangled up and both go down. More often than not that gets blown off by the refs as 'incidental contact'. But IMO, the play I described above is really not much different.
Anyway, that's one rule that can be a major player in a game's outcome that should be reviewed, IMO. Heck, if I were coaching a team, I'd have the WR's practice slowing down a hair to draw the 'inciendental' type penalties I described above. And chances are, they probably are practicing that.