Thanks for the update Borg,
I think the world cup and super cup need to go. There is very little demand for both. Even the beer and wino cup can struggle to be filled. Players are not interested in spending up to 1000 credits for a cup competition where half the players will only play one match.
If the entry fees were lower, maybe 100 or 200 credits, I think you would see more interest. The winners prize does not need to be very high, 1,000 credits is surely enough. The prestige of winning is much more important than a few thousand credits.