I'm pretty sure half of .net could manage a touchback if kicked from the 40. If they are going to do that, then they need to make touchbacks come out to the 30 or something, because kickoffs would become meaningless. Considering that there are a lot of good players who made millions to support their families in this league on kickoff teams, eliminating or marginalizing kickoffs seems really unfair to a substantial bulk of the league's players. Plus it would remove one of the most exciting plays in the game.
And the long distance extra point? That's pretty silly. A ways back I kind of liked the idea of an automatic 7 for a TD though, with teams gambling a point if they want to go for 2. Most teams won't go for two so removing the PAT would shave several minutes off of every football game with essentially the same outcomes.