My father was a film-maker. He always said he wanted to go like Humphrey Jennings, the legendary director who stepped backwards over a cliff while framing a better shot.
Making a programme that appears to condone a positive stereotype actually enforces all the negative ones as well. It says that they all have a valid point. To assert that Americans are naive, Germans humourless and the French arrogant is one thing: they're big enough to take it. But to say that there's a conspiracy of Jewish bankers, that gypsies are thieves, Pakistanis are dirty and refugees are muggers is something quite else.
Science fiction is never about the future, in the same way history is rarely about the past: they're both parable formats for examining or commenting on the present.
Once upon a time, a historian told me that the most important choice a new historian could make was of his or her specialist subject. Most of the good stuff was far too overcrowded, so you had to pick about in the exotic and extinct. His recommendations were the Picts or the Minoans, because hardly anything was known about them and you could spend a happy lifetime of speculation.