My boy goes to a European School (schools set up for employees of the Union), because my girlfriend works for a European institution. I sit on the parents association of the school. That said -
There already is a common language and it's English. It may not be officially recognized but it's what everybody working for an EU institution uses.
Not knowing any MEPs by name is your choice and not a deficiency of the EU.
Even the speaker of the house doesn't.
President of the EU commission starts off in her language, briefly reads some English off a piece of paper and then switches back. Maybe 1 in 3 or 4 MEPs speak some English. It's very hard to watch. And mind you, in most EU countries regular people would have trouble following the English translation too, they'd need to find one in their language.
I'm not questioning what you said about those working in EU institutions, I'm sure that's true. But that's irrelevant, that's not what drives politics.
There already is a common language and it's English. It may not be officially recognized but it's what everybody working for an EU institution uses.
Not knowing any MEPs by name is your choice and not a deficiency of the EU.