The last post in this thread from 2013:
...president of the United States? Hillary Clinton
...chancellor of Germany? Angela Merkel
...president of France? Francois Hollande
...prime minister of the UK? Ed Miliband
...prime minister of Canada? Justin Trudeau
...prime minister of Australia? Malcolm Turnball
He managed to get three out of six right.
And would have been five out of six if not for two electoral upsets.
Anyhow:
...president of the United States? Idk, could well be Trump, if not him then someone like Gillibrand
...chancellor of Germany? Merkel'll still be there, despite her current issues
...president of France? Macron, with low approval ratings
...prime minister of the UK? May, with low approval ratings
...prime minister of Canada? Trudeau, with somewhat better approval ratings than the above
...prime minister of Australia? Whoever in the ALP caucus managed to successfully overthrow Bill Shorten