considering cathay has really good frequencies to almost pretty much every big and important airport starting from next summer, I think the future routes would be more ambitious and interesting, underserved markets. though aircraft shortage is a big problem, as I'm sure cathay would use almost all its a350s and b77W next summer, so realistically only A330 range things could be added, I think until B777X/ or cathays future long range plane order arrives.

cathay might do more middle east/ Africa connections (e.g. JED, CPT) maybe as the government wants it, there is demand from mainland china/ SE Asia, and its rather unserved, most east asian carriers barely fly to these places. i also believe more mainland china routes would be coming soon- and more increased frequencies to pretty much anywhere.

in the europe/ NA side, CPH, DUB, LGW is unlikely as loads weren't that good before, maybe things like BHX, ATH, LAS, or even MIA could start. all which have potential i believe.