But are you looking at this as a "good for children" or "good for the adults"
Obviously it needs to be both, but the first view should be "good for the children"
Personally, I can see both sides, as dc are often exhausted by the time the holiday comes around, so maybe 4 weeks at say east, and then 4 weeks summer holiday?
My dc have left school, so I have no skin in the game currently