First off, Trump had been saying for years we needed to bristle up our military.....anybody think Putin likes the sound of that happening? Trump knows how to repatriate capital sitting overseas, bringing investment and wealth back to the US. That can hardly be music to Putin's ears. Trump is expanding our natural energy sources making LNG available for export to Putin's eastern European customers....hardly good news for Vlad. Trump demands NATO expand their defense spending to 2% of GDP which in most cases doubles the armaments facing the Ivans. And by bringing heavy manufacturing back to the US, we can again convert domestic production to military production that saw Detroit and other cities provide the WW2 "arsenal for democracy" in case of another world war.
Further erosion of our manufacturing base made us dependent on the very countries we may be facing in a war.....an impossible scenario. New investments in steel, copper, aluminum, and rare earth minerals will make us self-sufficient to defend ourselves and allies. The long-term effects of these issues spell nothing but trouble for Russian hegemony. And finally, Trump's calls for China to stop devaluing their currency while teetering on the brink of economic collapse thanks to overproduction and bad investments, puts another potential Putin foe in better shape. Donald J. Trump is the last man on earth Putin wanted in the White House.
Let's analyse what you say. If I get anything wrong feel free to correct me though. Your first point is that Putin won't like the US strengthening their military. This would be true if their was any type of parity to begin with, but since the US military budget is already bigger then the next 7 countries combined, the increase doesn't mean anything for Russia. Quite simply they can't compete anyway, so what does it matter.
Second argument, Putin doesn't like Trumps insistence on producing in country. The US and Europe is embargoing Russia atm. Something that for sure would have continued under Clinton. As the whole Flynn saga proves. Putin was led to believe that under president Trump his chances to lift current sanctions would be larger than under president Clinton. So if trade was already close to nonexistent, what does it matter???
Third argument. Trump has asked NATO countries to expand their contributions. Guess what..... so did Obama. And unlike Trump Obama or Clinton never questioned the US commitment to NATO.
The last part is a few disjointed points I'll try to address as I can identify them. If you can produce recourses internally you were never dependant on other countries to begin with. So the point that Trump trying to get heavy industry back makes the US strategically stronger doesn't make sense. Furthermore trying to claim that Russia had any type of hegemony is Bogus. The US by itself is both military and economically WAY stronger than Russia.
I'll answer your original question now. WHY WOULD PUTIN WANT TRUMP IN POWER. Putin is trying to divide and conquer. He wants to seperate the US from it's allies and he wants to break up the EU. Trump ran on an isolationist platform and got Russian support. In Europe both Wilders in the Netherlands and Le Pen in France received the same. Both of which are running on a promise of exiting the EU. Russia is helped by a divided world and that supersedes any marginal economical losses and they are marginal they would suffer.