I think this should be split into 2 separate issues:
1 - Rework (or not) lean animation to keep weapon in vertical position.
2 - Implement correct ballistics of canted weapons.

This issue was processed by our team and will be looked into. We thank you for your feedback.

Per Blu3sman's remarks: the 'issues' can be atomized even further per his comment with respect to incorrect:

· character lean kinesiology
· weapon handling/canting animation
· camera axis rotation
· infinite camera and animation translation speed
· ballistic performance of canted weapons

The scope and context of the issue is offering idealized, standardized presentation of infantry weapon handling and perspective that that reflects the real intentions of infantry weapon handling.

At the very least the weapon should not be tilted while leaning. This is a very common error done in FPS games. In real life you would never tilt your weapon as long as you are able to, and especially not while leaning and aiming through the sights.

I agree that this needs fixing, it can be very counter-intuitive when shooting a weapon with a low muzzle velocity like the ASP-1 while while leaning (weapon is canted) and the bullet still magically flies in a perfect vertical arch when it shouldn't.