10% layovers would probably bid senior assuming they were productive. A lot would welcome an occasional layover (1 or 2 a month) and it would be just enough to significantly increase aircraft utilization. Its been a blessing to keep red-eye's off the table for the decade but a few will most likely return in several years. With that said, I don't see this place losing its top QOL rank anytime soon based on the competitive advantage of having mostly day trips.