The rapid proliferation of UAS in recent years has exceeded all expectations. (transportation.gov)
Most realize that the value in UA miles is / was international business class and that has taken a huge downgrade. (mommypoints.boardingarea.com)
So transferring to Singapore, or Ethiad wouldn't help much, because I wouldn't be able to combine Krispoints with UA miles on the same reservation (unless Im wrong)? (millionmilesecrets.com)