I'm not in love with the direction this is going. Essentially, a TD is now 7 points and a FG is 3 points, and there is an opportunity to go for 2 on a TD conversion, usually to catch up when behind. If they move the PAT back until kickers start missing it, TDs will no longer be generally worth 7 points and that will change the game.
It seems to me if they must change this, maybe just doing away with the kick, moving the ball to the one, and running a real play for the PAT would inject excitement in the game and the whole offense would have to execute for the PAT to be successful. Just move the ball further away from the goal line for the 2 point conversion.