If things get a lot better, the Watchtower and consequently JWs, would be like:
"See how things are getting better? That means any minute now the governments would make a proclamation of peace and security signalling very imminent destruction for this old system under Satan's rule."
But if things get worse, they would be like:
"See how things are getting worse? That means we are very very very deep in the time of the end and Jehovah will bring an end to this system of things any day now. it is obvious for all to see that this system of things has very very very little time left!"