That just doesn't make sense: it's daylight until sunset, every single day. Whatever force has led people to get up later and later in the day — and thus want sunrise & sunset to occur later in their circadian cycles — will exist regardless of whether we're on DST or not.
Mark my words, if we went to year-round DST then in a few decades folks would want to have a summertime two-hour offset; if we went to a year-round two-hour offset then in a few more decades folks would want to have a summertime three-hour offset.
Just. Quite. Fiddling. With. The. Time. Seriously. If one wants to get up earlier, get up earlier. If society wants to get up earlier, get up earlier.