In actual EU, decisions are made by informal bodies like the Eurogroup, meeting under close quarters and with no documentation, with economic and diplomatic pressure from top dog countries, with satellite states vote how their sugar daddy states ask them, and a whole lot more besides.
Representative democracy, with it's paltry accountability except every 4 years, gerrymandering-schemes (not a US-only problem), typically revoked election promises, backroom talks, corruption, and private interests paying politicians is already undemocratic enough as it stands.
And suddenly removing the voters even further (as in the EU Commission), or adding "bodies" with no officially defined role and protocol, and closed discussions, like the Eurogroup, is "democratic" because those involved were "democratically elected finance ministers" under unrelated to the EU national elections.
With the EU, the process is formalized, opened up for scrutiny at many levels (sure, they could be more, there are people working on that problem), and then everyone can have a say through the European Court of Justice process.
The fact of the matter is that we live in an increasingly globalized world, and we must find ways to live together without resorting to the traditional genocidal ways (which are now practically unsustainable - a serious war on the continent would produce hundreds of millions of casualties). Somewhere, the political sausage-making has to happen.