Risa

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?