We are going way off topic but people love their trees here and I have had people threaten me about cutting trees. Outage would also depend on how the system is set up. Is there automatic flop over to an adjacent feeder if there is an issue? How is sectionalising done? How long are the feeders? Overhead vs. Underground feeds...etc.
ETA: Most of the outages I am describing are not what I have seen at my house, they are what I have seen over my years at the job. At my house in the summer we will have a few short duration outages as a lightning storms rolls though. We did loose it for a week during the Halloween storm few years ago.
they went through all of the major roads over the last two years and cut most things back pretty well. fortunately my whole neighborhood is underground so one of the main lines is going to have to go down for me to lose power. as to your other questions - no freakin' clue!