Yeah, I see what you mean. The more destinations you have easier the connections are to generate. I think VS will certainly be tightening up on this with their partners. But the oil centres you mention…
Singapore- already have agreement with SQ so this might be improved
Houston- impending DL deal fixes this one
Dubai- VS operate this route already
Baku- perhaps they could interline?
Rio- I think they’ll launch this within 3 years before the Olympics, they are switched on enough to get the extra publicity.