I really, really, like my MY, but even when we have five, we take our hybrid Pacifica. For occasional short trips, I can see putting 5, 6, or even 7 in the MY, but if your primary use case is 5+ people, a minivan is far superior. Little kids grow fast. I think that an average 7 year old in a booster, or a 12+ year old without one would be quite uncomfortable in the rear. The narrow space between the rails for passenger side foot room looks pretty uncomfortable as well. I'd also be concerned about safety when getting rear-ended - in particular the glass compressing the neck when hitting it. (Try even lightly flopping back in the seat to see what happens and you can extrapolate what happens in even a moderate collision.)
BTW, 75%+ of my miles in the Pacifica are electric-only. Don't get me wrong, I we take the Tesla every time we have four or fewer people - it's fantastic.