Already grumblings about new miiles earning method ...
and it hasn't even started as yet!
Was in the first class lounge at LHR sitting with two people who regularly fly J. One was Gold the other 1K
The gold was complaining that even though he spent exactly the same money on his ticket as the 1K, the 1K would be getting more than 30% more miles which seemed unfair.
I can see his point, either the new system is all about the price of your ticket or its about miles flown, United's solution is a mixture of both which could alienate those who fly F or J but not frequently.