Ok, I see that you completely misunderstood what I'm talking about. I don't really care if the EU standardize a EU English based on translation mistakes present in official EU documents. For example the case you point to, "financial envelope" seems to be a direct translation from French (at least that's how it feels as a native French speaker). Drop it if you want, it's just a detail.
I'm talking about the way the language is used by European citizens.
No we mean the same thing. The Wikipedia article you posted even links to the report I posted as a reference for what they mean!
That’s an EU report, by the way, criticising EU English as confusing and not understandable by citizens of any country unless they’re EU officials. That’s not a useful shared dialect!
Again, you're talking about the EU officials, that's not something I would consider. You're also pointing to the report as an authority on the domain, but while it is an interesting document to start a discussion it isn't in itself something that dictates what is useful or not.
The reason to standardize European English would be to give the 400+ millions people living in the EU a common, shared language they could identify with. These people already use in their daily life a form of English that doesn't follow US or UK standards. It is obviously understandable by citizens, otherwise they wouldn't be able to use it. They are right now using this weird, bastardized version of English to do business, communicate with friends, with their families, etc. This European English is already a de-facto language used for communication between EU citizens. Instead of telling them to correct their use of the language because it fails to follow British standards, I would like this distinct form of English, as it is practiced, to be recognized.
And if that offenses British English speakers, then that's fine, they will adapt the same way they already do.
I'm talking about the way the language is used by European citizens.
An example of some common differences can be found here: https://en.wikipedia.org/wiki/Euro_English.
Some of theme are quite funny if you're familiar with European languages :)