Thanks for playing!
Yeah, I haven't really given that much thought to the unlocked camera since most of the game should be played locked. It's definitely a lot better after changing the camera settings to have the head in the center, though.
There's no way to skip the posture regen delay, but there is a bonus posture regen when holding L1. Additionally, dodging an attack by taking attacks during iframes will also regenerate posture slightly, although it's kind of a hidden mechanic at this point since I never wrote it down anywhere.