We only ever have at the most anyway, and even that's not Christmas Day. So Christmas Eve my parents visit us, my brother normally comes too which takes us up to 7, but he'd be quite happy to stay at home.
Visit mil on boxing day and we'll be thrilled to just see her rather than have sil + partner + 2 kids as well. That's normally 8 of us, and we get to sit in her living room watching nephews play Xbox
. So getting to actually talk to mil, without them sounds great to me!!
I quite like the thought of a Christmas where we aren't forced into seeing a load of people we don't even necessarily like, just because they're family and it's Christmas.