As I said it was knocked up in a few minutes and I was trying to find something round with segmented gaps in it to mirror the area around the lift shaft and the wheel was the nearest thing on a quick google search.

But sure, if you want it to be an Event Horizon style meat grinder go with the flow (maybe the tower is part of the ventilation system and he sits on the top to get the best view on the station). It would be ironic seeing as this came from an attempt to disprove the tower leading to the reactor and I really wanted the reactor chamber to spin to add more peril to Lando and Wedge's attempt to destroy it.

Star Wars has lots of bottomless pits so having a bottomless pit filled with spinning razor sharp blades at least adds variety.

What I was trying to show was the tower filled with circular floors each with it's own connection to the death pit (if it's silly enough to be at the top why not have one on every storey?).