I think that the boxes on the "importance" scale are not very well named. I would personally use something like Critical, Important and Nice-to-have; or maybe a

I think that the boxes on the "importance" scale are not very well named. I would personally use something like Critical, Important and Nice-to-have; or maybe a variation of the good old MoSCoW (Must, Should, Could; the "Won'ts" can be omitted for obvious reasons. That being said, I can imagine each team having their own definition and levels of importance, with the names that are meaningful within their particular context.