andrew, I understand waht you are saying, but under no circumstances should the Nationl's shot be anything close to a normal house shot. Why?, simply because it is the Nationals. The point is tommake the shot demanding enough to require some skill - both throwing the ball and reading the lanes. Any chance of this would be gone if it was on something similar to the typcial house shot.
I realize that there will always be bowlers who will complain about the shot there saying that it is unplayable and unfair. Unless you've been living under a rock, you should know going in, that it is not a house shot. If a bowler doesn't want to bowl on anything other than a house shot, don't go.
A lot of "older" bowlers go every year out of tradition, knowing that their scores are not going to be very high, and still enjoy the trip. I realize that someday I'll be in that same position, but I plan on going every year as long as I can make the trip. Right now, I still think that I can be somewhat competetive, but that will change, and when it does, I'll still go and enjoy the trip.
However, that will all change if they were to put out a shot that is like a house shot. In that case, why go, there's no point in going if it's not going to be a challenge.