I'm in the same situation... looking for a SkyTeam miles-accruing setup via Asia-U.S. flights. I was thinking of pool in DL, but with miles-qualifying flights restricted to expensive fare class buckets, I'm not sure if it makes sense anymore:
A discounted, non-miles-qualifying "V-fare" CAN-LAX r/t ticket on CZ costs ~$850. The same flight, but in miles-qualifying "H-fare" prices out at almost $1500.