Cx and Sq should have remained together in the now defunct Passages.... there are like twin brothers in many respects.

I deeply regret the CX upgrade policy and the way OW treat its loyal customers flying in coach... I find CX great for coach travel, even better than SQ ( at least, the FA regularly serve drinks and offer coffee AFTER your meal and not during it, like SQ which means that by the time you're done with your meal your coffee has turned an ice one!)

to sum up, one has more chances to walk on the sea than being upgraded with CX and SQ.