As you know, inspiration can come from a multitude of place. The inspiration for this came from here
http://kotaku.com/gaming/papercraft/portal-papercraft-311187.phpAt the time, I didn't know what a weighted companion cube was...I just know I thought the over all design would work for the Borg.
In keeping with the portal idea, the Borg have assimilated a race of advanced beings which had mastered trans-dimensional portal technology. The Borg adapted this technology into the collective and have built an cube outfitted with an experimental trans-dimensional portal generator. This particular cube is designed with an internal spherical dome which serves as a lens to focus the massive amount of energy created by the generator. Once the proper amount of energy is obtained and the desired frequency reached, the cube projects a beam that enables a trans-dimensional portal to be opened. Once the portal is opened, a Shadow (from Babylon 5) vessel will emerge forming an alliance between these two races. Unfortunately, the coding for the alliance aspect is proving problematic.