No, the white Englishman thing really isn't that offensive when you consider than the American's were the good guys and the Brits were a droid and the baddies. George Lucas is American and the target audience was mainly the US. Revolutionary war meant they won, we lost - the oppressed beat the oppressors. Then the white ones their become the oppressors.
Funny thing is, there were apparently more Brits fighting as Americans than there were in the British army. The British had foreigners fighting for them. I saw it on
QI.
As for the Viceroy and Jar-Jar thing - Why did the Viceroy wear oriental clothing? Why did he talk exactly like a piss-taker's impression of oriental people? Why was Jar-Jar given floppy serrated ears that look like dreadlocks. Why was he given a Jamaican accent? Was was the Gungan leader made to look and sound like an African chief?
Lucas even brought Lando in, because people had complained about the lack of black people in the Universe. Let's look at Lando for a second:
- He was seen as a charming, if slimy, traitor.
Spaced used the term, "Lando," to refer to a traitor in the same way the word, "Judas," is used.
- It was only by the third film that he was able to redeem himself, but even then, he still ended the film upstaged by a bunch of teddy bears.