Well I like the idea of having grandparents and/or retired relatives in the area help out if practical (they have more incentive to properly raise/bring up right); what we did in our household (6 kids) during the early years...
Later on, it was more of the Nuclear family lifestyle...oldest (driving age) would act as elder keeping younger siblings in line whilst learning how to take care of oneself. Once everyone gets to an age where he/she can drive a car, said child would learn/take on errands to learn the practice of "adulting" by performing mundane tasks like emissions testing, picking up Rxs, grocery shopping, post office runs, other adult stuff, etc. Less awkward not having any experience from "helicopter" parents when said child enters the real world (why many millennials seem to give us a bad rap when it comes to "common sense" stuff)
*Might seem like a "tough love"/survival of the fittest/Darwin-esque kind of approach, but I am grateful my parents brought all of us up this way; everyone of us is way more responsible and independent now as adults vs. peers (who are all over the place in terms of priorities and finances...many of these over parented/sheltered "youngins"/young "adults" lack common skills, sense, and lack strive & understanding for autonomy)