Since the 50s, XPs have been made more than 95% of the time, so what is it we're aiming for? Extra points have been virtually automatic for longer than most of us have been alive.
I'm not completely convinced that there's a problem and even if one accepts the argument that there is, that there is a simple solution.
Suppose we accept: PATs are "boring" and SOMETHING must be done to make them more "exciting".
Does moving the scrimmage line (more complicated than it seems) to increase kick distance, and thereby accuracy, really add much in the way of excitement? How low would the accuracy need to go before it's exciting enough?
Kicking accuracy has been steadily improving for over a hundred years and there's absolutely no indication that it's slowing down. Kicks at a given distance obviously cannot keep improving, but add some distance and the improvement is very constant (linear).
Kicks of 50-60 yards, for example, have increased in accuracy with right around one percentage point since the hash marks were moved in the mid-70s. That's 40 years of improvement, from below 25% to over 65%, with no tailing off yet.
Shorter kicks have seen accuracy increases start to diminish, but you really need to get closer than 35 yards to see that 1% a year improvement drop off significantly (and those kicks are made with better than 90% accuracy today).
So how far back do you move the scrimmage line? What percentage are you aiming for? 35 yard kicks, which is the distance I've heard mentioned most often as a new XP candidate, are already at 90% accuracy and on target for reaching 95% within a decade, probably even faster if kickers start kicking from that distance a lot more (which they would if the scrimmage line were moved). Sure, you'd still get the odd miss every now and then, but would it really add much excitement?
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Although it will never happen, I'd rather increase the points of going for it from 2 to 3.
And if we're saying that kicks with high accuracy are boring, wouldn't the logical conclusion of that argument be that action should be taken to make ALL kicks more interesting? I.e. by moving the goal posts closer together.
Good article on kicker accuracy:
http://fivethirtyeight.com/features/kickers-are-forever/