I disagree with your solemn vow logic. How are you going to find out whether or not it's a problem if it does not get some use?
I do not agree with your machina reasoning either.
Also for cow mangler :
Despite not needing ammunition packs as most weapons do, this upgrade itself is not significant enough to be considered unbalanced
WTF? Try playing soldier on badlands or granary to see how much of a restriction ammo is, and you'll most likely revise your judgment.
Although i'm sad for the vaccinator, I understand the reasoning. I really hope that future maps make last points easier to push and maybe it'll be fine to reintroduce this (unlike this **** of granary pro), because, outside of last holds close to spawn doors it adds a lot of dynamism to the game.
Good reasoning for the rest.
When do you plan on reviewing the global whitelist again?