Power management could still be a lot better for Intel laptops (though admittedly over the past decade it's come a VERY long way). On my Chromebook running Ubuntu the powersave governor noticably stutters as it decides whether to boost the clocks, but all the other governors significantly hurt battery life. Somehow Windows managed to solve this battery problem with all its bloat, and Chromeos also has while also ultimately running Linux under the hood. Laptops could really benefit from the same level of driver maturity as desktop platforms.

I'd also point out touchpad gesture support as a secondary point which is lacking. I love that pixel perfect scrolling and gestures are integrated into many desktop environments now, but they lack configuration for sensitivity and in some cases leave it to the applications themselves to control. Scrolling in Chrome is way too fast and Firefox way too slow for my trackpad, but unlike the cursor speed/acceleration, there is no setting to adjust the sensitivity of pixel perfect scrolling in supported applications.