Europe could form a Voltron and it will suck, and always suck, until their governments figure out how to act. The French have their moments, the Germans are haunted by WWII, the Brits have some fight in them but I question their country's military leadership, the Poles are rabble, and Eastern Europe is like an African military with better funding.
You have to start somewhere, but this idea, if it even bears fruit, is about 5 years away from being relevant. The nations need to spend money on their militaries and loosen their emotional shackles.