Power or battery life, power or battery life, power or battery life.
Must be hard for the bods that make these things to workout what parts to fit but it’s pretty clear with the TR that the design goal was battery life first, performance second. It still performs wonderfully I’m sure but the main buyers of ultra portables are people who are extremely mobile so battery life matters more to these people.
Personally if you have enough RAM I wouldn’t have thought the HD speeds makes too much difference to the performance of the system after bootup and slightly longer app load times. Once you have your app open it should run the same speed regardless.
I’d like to see larger drives and extra cache would be a bonus. Spin speed will cut battery and also make the laptop get hotter. Could make a reasonable drop in battery life that it might not be worth it.