I dig the concept... one thing to tackle would be making that stable, any ideas you already have kicking around?
Good start with your theme... since you are trying to go unconventional try to push the shapes and content you are aiming for. Cubes, technology, color, stuff that simulates a hive/collective type of feeling. As I recall the Borg ship was made out of a lot of components interlocking together... what if you used some sort of square I-beam like structure for the central column...? Granted it would be a pain to create or find a pre-fabricated solution... but it's all conceptual right?
Imagine the wires running through the column up to to the monitor, speakers and marquee. You could even paint them... maybe with something that glows or blacklight responsive?

Possibly use some ACTUAL printed circuit boards exposed on the surface to add texture and character...
Fun stuff, I hope you can go nuts on it!
-baker