Agree. As I have pondered deeply and had a lot of character development around the concept of skill in general and why I like it so much, I've come to the same conclusions.
As a caveat on the second point, I think what level of skill should be considered "too bullshit" relies heavily on the verse in question.
If Juuzou Shishimi showed up and started cutting concepts and black holes apart in, say, The Incredibles, that would suck, because even the outright superpowers in that verse don't get that intense. But he's fine in his own series, because it's a series full of bullshit hax in general, and he just happens to be 'the skill guy' for it. Super-skills work best as a foil to super-powers.