Not sure if it's been mentioned, but a structuring to prioritize 'higher spec' and almost 'over cooled' CPU to allow for the eGPU market to flourish.
With apple opening its 'official' doors to the eGPU scene now even thought its been going for some time. An amazing Tablet/Laptop with a great CPU and internal GPU can handle day-to-day work. However traveling students/photographers/videographers can utilise an eGPU and Thunderbolt 3 to get the most out of their machine.
From my understanding, the bottleneck then becomes thermal throttling of the machine. With a high end GPU working alongside the CPU things get pushed, but with the small form factor, the Eve could get hot (as happens on many gamping eGPU laptops atm) As such, designing "overcooling" so to speak into Gen 2 would allow it to be a truly versatile devise.
Price/Complexity standpoint, I'm not certain, but i'm pretty sure the eGPU scene is taking off in a big way now, so Gen 2 might as well factor that into is design.
Hope that make sense.