(1) I think it's 5000 miles bonus, not 1000. It was 10,000 until a week ago. That gets you your award tickets.
(4) "With all the weather, and mechanicals, a frequent traveler is always at risk of being separated from his or her family. Joining gets United's top professionals working on trying to reunite you. How can you put a dollar amount on that?" See if you get any traction with that.
(3) You probably do not want to mention that your status already gives you and her access on your trip to China.