So the dossier comes from Russian sources.
How to destabilize the American leadership.
Step 1: hack the DNC and leak all of their slightly uncomfortable secrets to the press to get Donald Trump elected.
Step 2: create a honeypot of real/fake opposition research against Donald Trump and feed it to organizations doing work for the DNC.
You smear both, possibly cause the impeachment of a president, and everybody fights, everybody blames each other, and the county divides further.
This is obviously my insane ramblings but it seems to me like if the goal was to sow discontent with the American government you would want both sides to look bad.
The idea of Trump as a Russian puppet sure sounds nice but it's impossible to orchestrate without being caught. My assumption has always been that he is a useful idiot for the Russians who saw electing him and then turning the country against him the best way to cause havok and weaken the USA.
Why do people keep coming up with out of the box ideas just so they can assume the best of Trump? What has that man done that you don't assume he is a living turd capable of these things? I mean yeah I am biased so I'm more quick to believe it but I also have eyes and ears and know all the things he has done and has been accused of. It's adding up. The smoke is smothering me at this point.