I am surprised to see so much resistance to what it should be the most logical approach: The net is part of the court, ball hits the net and goes in.. you play it out.
It is:
1) Consistent. No "when", no "if".. simple and clean every time
2) Easy to self-judge at any level from professional to club.. it's part of the game, always, you play it out, always.. no discussions about "I've heard the ball hit the net".
3) Easy for the spectators because of 1 and 2
I really don't understand the "luck and unfair" thing.. isn't a ball touching 1mm of a line luck? isn't missing by 1mm bad luck? Luck is part of every ball sport, tennis isn't and shouldn't be any different.
BTW talking about rules, I also like the 1 serve rule at the UTS.. it avoids the danger of serve-bots while introducing a very interesting strategic element to the game.