I grant you cover is a pain and subjective. I'm out now but I'll draw a picture later and show you what I was talking about.
Interesting that you can't quantify tactics - that would be difficult but if the rationale is supposedly 'tactical' as compared to being pissed off at SOs, that's a different emphasis from the 'mission'.
I recall having some displeasure about the on the move behind cover reload contremps. I was told that asking gun fight experts was the rationale for not moving. Oh dear - that went bye bye and that was great. Round dumping - an SO once gave me major crap for such. Yesterday, I teased said SO as that changed and he actually told someone to dump for a better reload - haha. He took it well.
Later.