Personally I prefer to just have two levels, blocking and non-blocking. Outside of that I should be able to trust the code author to appropriately respond to co

Personally I prefer to just have two levels, blocking and non-blocking. Outside of that I should be able to trust the code author to appropriately respond to comments, I don't see why I as the reviewer should be the one deciding on the follow up action. I can see how it might be more valuable for more junior members of the team though.