I couldn't find this request ever made, so I thought I would add it. It would be very useful to be able to sort routes by the amount of completion the route has. With a monopoly option, an airline running to smaller routes with small or medium planes would be able to more easily raise prices on a particular group or routes. Another airline might want to lower prices on heavy routes. The options could be based on how many seats supplied compared to demand. Say >1, x1+, x2+,x3+ ext.
Another possible nice addition would be setting price changes by airport (I've seen this one posted, sorry to post again) or by fleet type.