The rise of a global English doesn't mean the loss of a geographical identity. People in Britian remain British, those in the US stay American. A model is Switzerland. You can be German, French or Italian but you are ultimately Swiss. It will also free us from the shackles of nationalism and arrogance.
You contradict yourself here. If the rise of a global English doesn't make people lose their cultural identity then it certainly won't destroy nationalism and arrogance.
On the other hand a lot of people are worried that the English invasion will bring with it American and English culture. They believe it's a kind of cultural colonialism. The whole world will be Anglo-Saconized or Americanized.
And they are completely right. How many films do you see a day? How many of them is of American origin? How many of them spreads the American values? You know the answer.
A global English might overrun and replace lots of languages (alas Francais what has become of la grande nation). So everybody in the world will acquire a new linguistic identity. I wonder, what's wrong with that?
They are cultural values. But languages are not only disappearing, but new languages are emerging as well! So I don't think that translation will lose it's ground. English won't remain a world language forever after all. Russian was a world language too only a few decades before. Only time will tell what happens.
Another problem of human language is identity. Identity doesn't only help us to belong to a nation and provide a profile but also create big human conflicts. Just take nationalism which is not only based on skin colour and facial features but also on language.
I mean human beings have already thought of a language like Esperanto void of identity based on linguistc differences which has caused a lot of human suffering.
Well, conflict seems to be a part of human nature. Humans usually have to form groups, this can be based on everything e.g.: language, nation, sports team, a way of dressing, religion, social standing etc... Losing nationalism and languages won't solve anything because we will form new groups and create other conflicts between each other. A few thousand years ago in Rome you might get oppressed only because you were poor. Rich people vs. Poor peopke. That was typical. You saw many people fighting over a football match, I assume.
Unfortunately, most people aren't individualists like you seem to be or me. So wars are going to continue...
Have you ever read Asimov? He had a great impact on me! I dream of a society like Solaria. That would be paradise.
