Ok... so the problem is a limitation of the player's view ie the camera being coded to associate with a certain area of the cockpit --
? node?.
I am just guessing here... since I don't have access to the actual information.
It seems to me... in order to loosen up the mechs a little... u could make a sort of floating box inside the cockpit.
The relative position of the "Pilots view" would be moved to compensate for the extra motion of the mech... so that the mech animation would look good, but the Pilots camera point would not actually change.
So the Box / Camera Node would float inside a larger container which had a 3D size big enough to accommodate the 3D bobbling of the mech... and then adjust the camera node in the opposite directions of the bobble...
(or something like that)
As i said this is just guess work... not sure of the internal working of the engine.