It's been a countless amount of times my character has lost his "adjusted" stance (I.E, a low crouch is lost while crouch running; your character loses his low stance, and becomes more vulnerable to fire) whilst running or reloading.
There's been a few "oh crap" moments when I am in a certain stance, tap the reload key and my character goes to the default stance (again, going from a low crouch to a defaulted crouch) and nearly gets his head shot off. This is not a huge deal in SP, more of a big deal in MP, because human beings track movement more reliably, obviously, and sticking my head up unintentionally and getting it blown off by a marksman would make for a pretty crappy end to the evening.
Suggestions to the devs: I understand this is alpha, but to correct this issue, a possibility is to make a new walking/tactical/jogging sprinting animation for every adjusted stance instead of going into default stance every time your character even moves a foot or reloads. (also, adjusted stance reloads)
So, for a high stand, there should be a running animation with the character fully upright, a slightly lowered running animation whilst in low stand, (the medium run is already there) a high crouch running animation, (medium crouch is already there) and a low crouch run where the character's body is low to the ground just like it is when stopped.
Also, reload animations specifically for adjusted stances..... mentioned 3 times in the paragraph above.... so one does not go back into the defaulted stance when reloading.
Thanks BIS, really looking forward to this game being released!