2017 -- looking ahead
1) The enemy's attempt to destroy (or to change in a way constituting de facto destruction) Social Security and Medicare will fail, for the same reason as in 2005 -- some Republicans will vote against doing so, knowing that the huge unpopularity of such a move would destroy their re-election hopes. Remember, if all Senate Democrats stick together they need only three Republicans to block something, even without the filibuster.
2) Culturally the US will continue becoming more liberal and less religious despite Republican efforts to reverse progress -- recall how things like secularism and acceptance of gays and gay marriage kept advancing even during the Bush years.
3) The Paris climate agreement will be effective even if Trump repudiates it. China, India, and other countries know global warming is real and are committed to action. Trump cannot lead the world backward on this issue, he can only surrender American leadership entirely.
4) In fact, in general the US role as the world's leading country will decline drastically in most fields as the rest of the world, out of necessity, collaborates to get things done without the help of the erratic and incompetent US administration.
5) There will be a falling-out between Trump and Putin.
6) Despite initial turbulence, Brexit will be a net benefit for the UK, and pro-democracy, anti-EU forces will make gains in other EU countries (watch Italy and France in particular).
7) Dâ'ish (ISIL) will finally be defeated.
I won't call it a prediction, but I think there's a strong possibility that Trump will be impeached, for reasons explained in the first half of this post.
Finally, we on the left will be able to do more than we now think to block or mitigate the worst of the wingnuts' agenda, if we take an inclusive rather than exclusive approach. By that, I mean we try to accommodate and include as many different groups and viewpoints as possible, provided they are willing to work together against the enemy where it counts -- as opposed to a witch-hunt approach of defining this or that element on our own side as too radical, too "establishment", insufficiently ideologically pure, responsible for the election loss, or whatever, and trying to "purge" them. There are a very, very few cases where allies do do more harm than good, but in general, making the tent smaller and trying to get rid of everybody who only agrees with you on 80% of the issues instead of 100% is a recipe for permanent defeat.
[Image at top by TerribleNerd -- if you want to use it yourself, be sure to give credit]