On point #4 - I guess people who are still flying AC will have to wait and find out the hard way! Let's see what happens starting in March. Hopefully things will be smooth but one never knows ...
#5 has always been true I think. I'm not sure how many times it's actually happened mind you (I certainly don't recall anyone here posting that this happened) but I suspect that in 2011 we'll see much more stringent application of this "rule".