What about non-responsive controls, lack of options(half the games don't even let you remap keys these days) and bad UI/HUD?
Non-responsive controls- never something I've had many problems with, though maybe I just haven't played the worst offenders. Also, a lot of people mean "I don't like the controls" when they say this rather than an objective standard, not to suggest that you are one of them.
Lack of options- graphical and performance stuff falls under the category I mentioned. Remapping controls, while expected on principle, isn't going to bother me personally a huge amount. I'm an excellent learner with good manual dexterity and large hands. Wait, what were we talking about again?
UI - navigating menus with the keyboard can be annoying, though it usually doesn't play a huge factor in gameplay.
HUD- I'm not sure what different information I need on my HUD as a PC gamer rather than a console gamer. If it's important, it should be there already, and its absence would be a game flaw rather than a port flaw.