While it's true that sometimes you want a link to act as a button ( <a class = "button">Looks like button</a> ), I cannot think of the case when you want a button to look like a link.

May I ask, in what situation did you encounter this? I still think this is way too specific (I have never had to do something like that). Picnic lets buttons be buttons, and links be links OR buttons, just buttons cannot be links.

I think in this way you can achieve less bloated classes and better readability. I value that higher than allowing buttons to be links. That's just my preference. Thank you for the insight though, it's a clear and good explanation of Picnic limits.