Have you actually looked under a BSG equipped Jeep? The 48V battery is actually higher than the gas tank, and the coolant lines are mounted right along the frame where they would be very hard to damage. When off-road, I am more worried about the transmission lines & brake lines than anything BSG related.I see!! I didn't think about that! So If the BSG version doesn't have an alternator then yeah the non-BSG would definitely be more "trail worthy" if you could call it that because thats one less thing to hit and break on the trail..
I have done my fair share of wheeling here in AZ to know that it wouldn't take to long to hit the BSG components on the trail and definitely break the system or the lines going to it..
Maybe thats what they were thinking with this change.