I agree with the extra point being too easy. I think it's a good idea to move it back, but I'm to the 25 might be a little drastic. As already mentioned, for a 43 yard field goal you get 1 point, but you could kick a FG for 30 yards and get 3. I was thinking maybe somewhere between the 10 and 20 yard line could do the trick. It'd still be a 95% chance or so, but that's far and away from the 99.8% we have now.