I think the point value of the kick can be varied based on distance for example anything under 30 yards can be 2 points between 30-50 yards cam be 3 and anything above 50 yards can be 4 points
this could bring more strategy into games and POSSIBLY create a new job opportunity for Dick Curl
NFL Europe trialled the 4 point FG from 50+ yards ... you then had the crazy situation of teams deliberately losing yards to get a 4 point FG to tie the game, and defenses trying to give up more yardage to thwart them.
The way the NFL is going, they want to encourage more TD's, not more FG's. So I'd doubt more points for a FG will come up.