Seriously, with the devastating defeat to the Borg and the Borg uni-matrix, you would have thought that Voyager would have took home some extras cubes, or at least Spheres or Probes as souvenirs. The Borg wouldn’t of noticed that those ships weren’t Borg, and Starfleet would have gotten some killer Victory Royales against the Borg. Plus, what Starfleet officer wouldn’t want to serve aboard a Borg cube? It’s not like they’re scary, with a lot of points for people to people to fall down, and the abundance of entertainment and personal space on this ship really provides an awesome, no risk and no assimilation whatsoever experience! So why didn’t Starfleet employ more Borg Cubes instead of spamming the space bar and blowing them up without second thought?
I know STO isn’t cannon, but they built up a pretty impressive array of anti-Borg weapons and tactics that I wish would make their way into cannon.
I’m pretty sure that Janeway helped with anti-borg stuff after Voyager got home. Though there isn’t much canon content that takes place after all that anyway, and the content that does exist isn’t really focused upon the Borg so it’s unlikely to even be mentioned.