I went on the math/Godel angle this morning; Hilbert Gateway, Kolmogorov City, Cantor Terminal, both Russell & Ackerman in Eravate are all dead ends.

I had fun playing detective though!
Most systems I've visited with stations named along these lines have had a lot of traffic in them.
It's been two days now, and only three people have claimed to have found it, which makes me think that we can eliminate the more obvious suspects, and try to think from the viewpoint of the competition creator:
It's not in a high-tech system - this is assumed because it's a graphics card, but this is too obvious. High tech systems tend to me more popular with traders too.
It's nowhere near the drop off system - this would be too easy.
It's somewhere with typically low or zero traffic - don't want anyone stumbling across it just by logging in.
It's not an outpost (not certain, but unlikely).
It could be in a system with lots of stations (to make finding it more time-consuming).
It could be a long way from the jump-in point (ditto).
Now I'm at the stage where if the traffic report tells me only two or three other people have visited in the last 24h then I get a surge of hope, but still nothing so far...