Legacy Type Movement: More freedom to view your character while moving

[Thighland]

You are missing the point. Legacy and Standard are movement settings. The game has to decide what is the reference for your "forward-back-left-right" inputs. There has to be one. And it can either be your camera (which is what most 3rd person games will do) or your character model. There is no in between.

You are asking the movement setting to switch from Legacy to Standard when you are holding left click. If you want your character to keep running towards their "forward" regardless of where your camera is facing, you are not using Legacy setting.

The devs literally did exactly what I said and wanted in 6.3!
But when I tried to deactivate the camera pivot, it didn't work for me, but when I see others deactivate it, it works for them.
Just like in the video I posted above

Here's what it says in the patch notes:
"Automatic camera pivot can now be disabled when Legacy Type movement is enabled, allowing for seamless play with the camera at any angle."
"Apply this setting by going to Control Settings in the Character Configuration window and selecting "Disable camera pivot." under Movement Settings in the General tab."