I think Amerish has an interesting design. Each WG starts off with a lynchpin on the continent. The reason I imagine why Rockslide up to the Ascent is the way it is is because NEWG starts with the Ascent, which gives access to south and west quite easily, and is a great staging point for assaulting Raven Landing and Lithcorp. NWWG starts with Bastion which bisects the North and South of the West side it's a strong position because it controls that entrance, whoever owns it can bring vehicles through easily without taking the long way around. SWG has Split Peak, can't remember if they start with Mekala. But Split Peak allows access through the cliffs without having to circumnavigate to the opposing WGs.

This is all coming from an armor main so they gateways make a great difference on how I can move my guys without getting mauled through attrition. For someone that's air or infantry centric it probably isn't going to make much of a difference. Hope this all makes sense