I don't think a general public set of skills like this is going to work. I see value in vendors producing skills for their own products, and end users maintaining skills to influence agents according to their preferences, but too much in these skills files is opinion. Where does this end? Ordering of skills by specificity, such as org > user > workspace? And we know that skills aren't reliably picked up anyway. And then there's the additional attack surface area for prompt injection.

The post you have commented on is not pertaining to a general set of skills at all. Its a link to a specification for skills.