For instance where it has "Do not show destinations to which I fly" add to it "Do not show destinations where alliance airline is based"
While we're at it, I would like to see another option: sometimes I want exactly the opposite of this existing option, "Show only destinations to which I fly".
And as I decided to start dabbling with cargo, I found out it would be extremely useful if airplane icon which designates destination to which I fly could be different for passenger plane, for combi plane and for cargo plane. At the moment, one has to open route planning window for each destination to check which plane flies there. Bar those players who have excellent memory, of course, and know all their destinations by heart, where I, unfortunatelly, don't belong... ;)