It is related and may add value, but has no direct relation to the main purpose and/or applications of the project.
Yes, it can definitely be implemented, but is not likely to get noticed by the development team immediately.
Yes, and they’re of excellent quality
No, but the implementation is self explanatory or very easily executed.
It's common, but it will have some measurable positive impact on the user experience or product functionality.
This contribution adds some value to the open source community and ecosystem or is only valuable to the specific project.