I was the 2nd to vote 15 mins. Honestly, I had never thought about it until Eddie Mac said something to me about virtually skipping lunch altogether. Obviously every tournament is different, but on many of the pitch and putts like Newton, Grinnell, Grandview, etc... you don't need a lunch to get you through. Bring a sandwich and a bag of chips. It takes 5 mins to eat, and if you need time to digest than you're eating too much. Golfers routinely are playing 5-6 hour rounds so they snack during the round. Imagine being done and on the road by 3 or 4 in the afternoon!
Every course/tournament is going to be different. I actually wouldn't mind seeing a rolling start of sorts at certain places, like shotgunning the pro groups at 9, adv groups at 930, others at 10, all starting on the first 5-6 holes, or vice versa. That way the TD would only have to handle 5-6 cards at a time to check, sort and turn around for the 2nd round.
The bottom line is that I think an aggressive lunch schedule could be a perk that a TD could try to offer to get people through and home quicker. Maybe it wouldn't be for everyone, but with such a competitive tournament market certain TDs are going to have to get more creative to help promote their tournaments.