This is great news.
It means for me club Europe DUB-LGW and Club world from LGW to Jfk...something I'd do a few times a year and at 320 tp's a pop.
We sure do miss the times when EI was in one world and you could get into LHR on their premier class and onwards in CW to jfk-netting 320 tp's.
While it took a time in coming this is a similar service back again.
Pity it's on a 777 though.