And what about his very clear support of Russia? Is that also a positive change for the EU?
I do not think Trump is supporting Russia, it seems like he does not view them as a threat and is very China focused (which is actually scary since antagonizing China can have far worse consequences). He is also focused on cutting spending/reducing inflation pressure from war/sanctions.
Meanwhile EU, and Germany in particular, built their economic growth on cheap Russian energy - and is now bending over backwards to revive it in a world where energy prices are rising. If Europe took Trumps stance of deescalating Ukraine ASAP, wrapping up the war and ending sanctions - our economy would recover much faster. And it would give EU the resources to build a proper military. Even if Ukraine got all of its territory back its going to be a humanitarian disaster zone for decades and a burden on the rest of the country. I really do not see a winning scenario Europe is pushing for in Ukraine.
Now its actively looking to pull its bases out of Europe and calling for Europe to arm itself. A positive change for EU in the grand scheme of things.