The passiveness of the keeper has historically turned people off from flocking to it like offense, mid, whatever. This is due to the fact that, in addition to having to stay at the goal the whole game, keepers have virtually only one way to save anything (being to catch it). I think that makes the position quite monotonous to the wider group of people who want a more active game.
If keepers had a better a chance at volleying the ball away and volleying became a viable option, the keeper position would become much more fun because people would actually get to do something more active than just moving around. Davidm has always been against this because he thinks 'shots will always bounce back,' but I think it would just let the offense take better shots and make the game more competitive. I'm not sure, but I think davidm said a long time ago that the keeper volley is a little nerfed compared to normal volleys...which means that the keeper will incoherently miss volleys that everyone else can hit.
Also, I think with better volleying(just low powered to knock the ball away), although the keeper position becomes easier, it becomes more skill-oriented. With just dodging I'd say about 30-40% of saving a goal is making a good guess, and 60-70% is good reaction time.
Pros:
Offense more talented in long-run
Lower scoring games, thus mroe competition
Keeper position more fun/active
More people want to play keeper position, creating more balance w/ other positions
Cons:
Keeping is easier
Offense is sad
. Just play on dbl3, u can save anything or most of the volleys 
