I was sorry to see staggered holidays go but I can see that staggered holidays throws up alot of problems.
Only in last 5 years or so has our area (in Lancashire) adopted the standard holidays. Prior to that schools finished end of June for the wakes holidays. Went back mid August, then had another 1 or 2 weeks off in September - so 2 bites at off peak holidays.
Problems were apparently teachers contracts were central and ran from 1st september - so children would have old teacher for 2 weeks and August born children started reception aged 3.
Many businesses esp factories still adhere to the old wakes holidays though and shut down. If your parents only get 2 weeks early july and 2 weeks off at xmas it does seem very unfair that a child can never have a family summer holiday.