I think that Trump has hastened the realization that the US of the last couple of decades has changed much. The current Trump administration has made Europe realize that they can no longer respect, count on, and allow the US to set the tone for the entire world on any given issue. This realization has our allies taking more hand in their own destiny, and while this may cause growing pains, it may just be a good thing in the long run.
There is a current, to my mind, misconception many Americans have. It is that the rest of the world views the US and its people as somehow separate from Trump. I don't think this is necessarily true, and more and more I think the rest of the world is viewing us very differently than they ever did during even the last Bush administration. Trump has caused irreparable harm to our relationship with our allies, and even if the Dems were to somehow sweep the next election, deep suspicions would remain.
Look, countries have bad political results sometimes, but the GOP has entirely encouraged this horrible behavior, and it's just another way the conservatives have utterly failed to live up to their supposed convictions. In fact, the rest of the world sees how far the GOP has flung to the right, when Mitch McConnell says
2017 was 'the best year' for conservatives, ever. They (perhaps rightly) see a vast economic and military powerhouse now under the thumb of a corrupt regime, and they're starting to really see that this is a problem that will not be corrected by just getting someone left of center in the White House. The US can not be counted on anymore, and when it behaves belligerently, the flaws in our world politics becomes pretty clear.
I think things can be better than they are now by getting Trump and these Republicans the fuck out, with a resounding one-way election, but the US has lost their special status forever. That's my take. Western world leaders will more and more treat us like China or Russia than like good friends.