Pros and Cons About Action Cameras?

Hello

I am curently making a survey about action cameras. What I would like to know is what you think is good/bad about them (and why), and what changes/ features could be cool to have. If you could also comment about limitations you have run into with action camera, it would be great!

The more detailed the discriptions are, the better, and please refer to specific camera models.

looking forward to hearing what you have to say!