8 hours ago, Shadows of the Future said:Seatroopers are more in scuba type gear, Shore Troopers are for environments where it's still wet, but more for surface operations where it's more of a situation where they aren't weighed down by the armor if they end up in the water. You're giving up some armor for not ending up dealing with drowning or getting stuck in the muck. It's also possible that it's a generally outdated version of the Scout Trooper armor that still works great for that environment, so while it was updated elsewhere, the armor got left in use there.
The various vehicular troopers seem to have largely the same armor, but different head gear. The helmets might actually tie into the various vehicles systems for a HUD there which would be a pretty good reason for why there are the AT-AT drivers and the tank troopers. Some of the armor pieces could be added or removed either by how dangerous the area is or by preference...
My point in bringing up Seatroopers et al was to note that if the basic trooper armour with some modification can handle extreme deserts, magma, trench warfare, and even underwater combat, it just seems silly that they need a specific type of gear for paddling in the surf. They could literally just put on Scout armour. As for it maybe being older stuff, sure, we could make-believe that, but this kind of logical scrabbling to establish a headcanon that doesn't seem silly shouldn't be necessary in the first place, and the way the Visual Guide article is written doesn't have any implication that their gear is anything other than bespoke.
The R1 vehicle stuff is a whole other thing, if they didn't want to use the existing styles they'd have been better off just not having a guy in the tank cupola than adding a third kind of vehicle driver gear.