Screens only get dirty on glossy displays, for the most part (unless you have outrageously dirty fingers), build quality is pretty arbitrary since, much like normal laptops, good ones and bad ones exist. I don't know what you mean by "too light", but I can at least agree with the fact that Windows 10's "tablet mode" is a load of crap. It's a much better experience with recent Linux machines, where their GUI is optimized for mouse, trackpad and touchscreen navigation. No need to switch modes, just reach out and do whatever you want. Keyboards though? You might not be looking hard enough. I've got two touchscreen Thinkpads that feel equally fantastic to type on as they do to swipe on. I feel like you're grasping at straws a little bit, here.
