Microsoft has so much legacy code when the mantra was "it does not matter how inefficient the computer is if development is fast", or "people just can add bigger batteries to laptops and the problem is solved".
While I agree with you on Apple coming out with a pen, I totally disagree with you on the heating thing. My 2011 Macbook Pro is pretty notorious for heating issues resulting in crashes and gpu problems. A class action lawsuit was finally launched this week over those issues.
You sure about that? Had a Macbook Pro (2008 or 2009, don't recall) and when doing serious work on it I could just bear it on my lap, but it ran hot enough that I was beginning to fear for my sperm count. And definitely hotter than the Dell Xps running Windows I got after it, for doing similar work. Dunno if Apple improved on that point now, but it doesn't seem (to me) they were always ahead of the rest or so.
It's not a problem that I have with my Cintiq Companion Hybrid. I hope Microsoft fixes the heat issue at some point.