

The Spitzenkandidat system is not part of EU law, but more of a political agreement that was hyper new and with no obligation, and saying that the European Parliamanet through the spitzenkandidat should be the only voice ironically weakens the voice of national governments, particularly for smaller and less powerful countries that we want to account for. (You voiced something akin to that too)
Most people also probably couldn’t tell you the process of the EP or focused much on how your vote would affect EP voting, so it’s hard to on its own justify to have a democratic mandate (not that you can’t take it into account. I like the idea, though I think I’m stuck between it either requires more teaching voters about bureaucratic processes that are going on, or is too much logistical tactical voting to take account for when voting). It also wasn’t a real majority result in the EP, which both undermines its practical use, but also more importantly the European Council proposed a compromising team of candidates, and the EP still has to confirm the commission president and carried through with doing so. Compromise is a huge part of being in a democracy.
I can only concede to needing structural improvements, tho I wanna stress that I think it was fair decision-making overall in the moment as the EP did get final say,
An army would definitely also need a clear “fuck no, im out” option for every decision anyway, or a lot less resources than I’m currently comfortable looking at them being gung-ho about. My understanding is that the cooperation means a lot less collective money spent due to each country’s specializations, but that is probably something where each nation need absolute “yes/no” power in regards to committing actual bodies to a cause.