I'd rather the family with infant children be boarded first so they can settle in instead of blocking the aisles as everyone else is boarding. When my children were very young it helped us quite a bit, having the time to settle in and ensuring we had overhead space nearby. Now that they're out of diapers and off formula, however, I'd rather wait until near the end of boarding.

I can't imagine a real airline ever even considering such a policy shift.