My hub carries no connecting traffic

Three causes, and they cost completely different money to fix.

• Seats. Your spokes are full of local passengers, so there is no room for anyone changing aeroplanes. More seats on the routes you already have, not more routes.
• Timing. Arrivals have to land before the departures they feed, with 45 minutes to make the walk and not more than about 12 hours of waiting. Check the Schedule panel.
• Geometry. The hub is not on the way. Addis works for West Africa to Asia and does not work for West Africa to Europe, and no amount of spending changes that.