With long travel times, particularly in the Western part of the United States a short Sunday is a bonus. You have a good chance to get home at a reasonable hour on Sunday so you can go to work or school on Monday. Extending the top cut by another hour or two or three means another day off work.
Also not all X-2's should make the cut. In a 8 person, three round tournament none of the 1-2 players should make the cut. Even in a 16 player 4 round tournament, the 2-2 players shouldn't make the cut. Certainly the X-3 player in both these scenarios shouldn't make it either.
We mean in a 200+ person event, where 5-2's, 6-2's etc miss cut. But I agree, X-3 not making cut is not too bad.
@LOLZ
It was a suggestion. I've heard it before, there was a similar thread like this last year and people had suggested adding additional Swiss rounds. In my point of view, if it were a real possibility (I understand it currently isn't) to add more Swiss rounds, why couldn't we just have at least one more round of top cut? That would double the cut size. I could see it being a staffing issue, though.