As an example, Ryanair already ordered a batch at a bargain price and relabeled the MAX as a new aircraft '737-8200'.
The -7 -8 and -9 designations have been used since the beginning. The -8200 is a special high capacity -8 with extra exits for a really high density 200 passenger layout that RyanAir wanted. The MAX name is a generational marketing name like how the -700, -800 and -900 got named "Next Generation" and the previous generation named "Classic" at that time.
Renaming it is not going to work and would not inspire confidence, and Boeing knows that.
I will do that not to protest against Boeing, but to save my own life.
I don’t care if I am a negligible minority in Boeing’s or yours eyes
We were all backing you, but the Roman army rolls on...
I wonder if it might be a minority that is significant to the bottom line.