So I think the main reason that the movement changes are so controversial is that in my personal opinion the changes that you guys as a dev team are making are unimaginative and feel lazy (the dive I will make an exception for personally but I still have concerns about)
Instead of just adjusting values and implementing them in a update surprisingly I think you should think about how you can make player movement immersive, realistc, and fun in a balanced way.
The dive is a okay start but where is the consequence?
Why do I just stand up instantly after that and I as a player for that action have no downsides. My aim is just a perfect as before and I get to run at a full sprint for the rest of the game.
There needs to be consequences to these actions to make them feel grounded. You added a voice to start breathing heavily and yet my soldier never gets tired. I can run hyperventilating across the whole map if I want.
Some sort of stamina system or movement system with consequences needs to be created where you can still have those really fun fast paced HLL moments but still feel like a real soldier in WW2.
Exactly how this system should be done is above my paygrade but what is being implemented now just feels lazy and I understand why people are upset even if they are blowing the whole "HLL becoming COD" out of proportion.