I'd be ok with eliminating the PAT. No real strong feeling about it, but the automatic nature does render it rather boring. I like the idea of allowing the 2 pointer and if failing to succeed, making the TD 6. I do wonder if scoring would be changed...7 points for a TD; I suppose it would have to. 849 of the 2544 points scored by the NFL's all time scoring leader, Morton Andersen, came from PATs. But what would be the alternative? To just award the FG kicker one point? Messes with the all time stuff if we change it, but awarding a point for nothing doesn't seem tight either.
The top 30 scorers are all placekickers. Jerry Rice is the top hands player. 31st, with 1,256. 208 TDs; if we add one point, 1464. Just for giggles, let's see how it would look...
Morton Anderson would still lead with 1,695 points. Gary Anderson would remain 2nd with 1,614. Jason Hanson stays 3rd with 1,485. Then Rice at 4th.
As to removing the kicking game altogether, that would seem to require a change in the name of the game. What would be "foot" about it?