Isn’t it possible that the collusion more regards the timing of the leaks than the physical hacking itself? One possible scenario that I would call “collusion” but doesn’t answer many of these questions is
- Russian government hacks DNC
- Agents reach out to Trump campaign, and offers a deal of some sort (e.g. “We leak X when you tell us to do so, if <insert political goal>”)
- Trump campaign (or associated organizations like advertising firms) tells them when the leaks should happen to sync up with other campaign moments
- Trump gets elected
- Trump administration follows through on promises
Note that I’m DEFINITELY not saying that this happened. I doubt the whole collusion thing. But it seems like a possible scenario and much more likely than the “Trump campaign literally helped them hack the DNC” one that you seem to be painting as the current liberal hypothesis.