Decided to look at the EXP's husband's overall success rate this year by route for UDU's. Grouped out and backs together (is SNA-DFW and DFW-SNA are same)

City Pair Upgrade/Miss

LAX-OGG 1/0
LAX-HNL 0/1
LAX-MIA 0/2
LAX-DCA 1/3
LAX-BOS 1/1
BWI-PHX 0/1
LAX-ORD 0/2
LAX-CLT 1/0
CLT-CHS 1/0
CHS-DFW 1/0
LAX-DFW 1/0
SNA-DFW 2/1
DFW-BWI 1/0
SNA-PHX 0/1
LAX-LAS 2/0
LAX-SFO 2/0


Pattern is hard to see, other than trans cons are tougher than ever.