Regarding the staff member being addressed by name, personally I really do dislike it, it just doesn't sit right having someone I don't know from Adam using my first name. I guess it's the English in me, that we haven't been introduced thing again.
I agree with this sentiment; it's interesting to note that Lufthansa and Swiss issue name tags with an initial and surname, e.g. H Mueller.
I find it feels polite to ask 'excuse me, Frau Mueller, may I have an xxxx', whereas would not wish to call someone by their first name, (unless I knew them, which is often the case on my local airline and they will often call me by name.)
Why do British Airlines insist on calling their CC by first name only?