I think it's safe to say there'll be no Cathay at EDI. Just like it was easy to predict that Hainan would last a year or 2 max.
2 airlines serving Bucharest and multiple eastern European destinations also are not sustainable.
The economy is slowing down and Brexit hasn't even come yet. I think 2019 is going to be a peak year and be lucky if it flatlines from here.
I hope I am wrong!