To be fair, Darklink, Draigo-wing in a kill points game is extremely difficult for most opponents. It really is almost impossible to win without wiping them off the table, and (since there are no objectives other than stay alive) there really is no "lateral play" that gives you an advantage in that situation.

I generally agree with you when it comes to the state of the GK codex and the appropriate way to tackle them, but I do generally draw a line at the Draigo-wing / kill points scenario. It's not impossible to beat, but it is a tough, tough game for virtually any army, and there aren't really any clever movement shenanigans that mitigate it.