MEP 2 - Adding a new feature

[jackiekazil]

If it is small - it goes straight to PR
If it is medium - open discussion, then PR
If it is complex....
A MEP is required when X

Experiments

If everyone agrees -- then let’s just do it.
If everyone doesn’t -- experiment

How likely you will have to change it in future?
How big will the impact be if you have to change it.

Related: projectmesa/mesa#1909