Having three children, I know a little bit about this subject!
This is mine:
Yes, it's dirty. It had just driven 600 miles in 2 days with two adults, a 6 year old, 3 year old and an 18 month old. It had six suitcases (approx 75Kg) of clothes and other junk, camera bags, a pushchair, and loads of other stuff that a family needs on a self-catering holiday. I could still use the rear view mirror. It's got leather, power-everything, 4-zone climate control, the largest sliding glass roof section of any car, and (at the time) the most powerful 2L diesel engine. It'll cruise happily at any speed sub 90 mph, and it can be pushed well north of that. While it's not the fastest or the best handling car money can buy, it's more than capable in a daily cut & thrust driving environment. Although to be honest, much of this is more about the drivers than the cars.
Because the 25Kg seats actually come out, rather than being stupid "stow & go" things, they're full-size, with 3 point belts built in, and isofix mountings. And they're comfy, even for a six-foot adult in the back row. I know, because this is where I sit when I'm drunk and the scooter man is driving it home.
My personal record is 2 adults, 2 children, a 4-drawer filing cabinet and 2x 2 drawer filing cabinets.
Oh, and it does 30MPG and was £30k.
My friend has a Q7. It was more than twice the price, adults can't sit in the back of it, and it does 20MPG. Aside from in a straight line (where his 4.2 diesel kills the Espace), it's no faster than the Espace.
I don't know why people are buying SUVs, not people carriers. "Sports Utility Vehicle" automatically shouts "jack of all trades", and so it turns out when you spend any time in them. People carriers do what they claim. They move people in comfort over large distances and with the attendant parephenalia.
And they're a comparative steal.
)
.
and 
. practically everything on your list...
