In fairness 3,4,7 & 8 were the only "superoutes" when they were introduced by nexus. 3 & 4 1st with arrival of 34xxx pointer darts. 7 & 8 when the 35xxx batch arrived. I would go as far as saying that they maybe there the routes with highest revenue. They also serve the majority of the towns areas. They new batch are bound to stray off route frequently as even now an e300 would hardly be a rare working on any of the shields routes

Kind regards

Chris