I know what you guys are saying and I'm not trying to dismiss or minimize your observations, but we discussed these same things early last season. He doesn't go full speed on every play. He is out there sometimes for 60+ snaps and is expected to be able to run a deep route at a moments notice. Also, he is a long strider so even when he is going full speed it can look like he is dogging it.
As for the bench shot, you could find the same shot of Marvin Harrison every single game for the last decade. Last I checked nobody has accused him of being a bad teammate (Belgian weapons aside).
Moss isn't going to be as demonstrative and emotional this year since his production (and the offense in general) won't warrant it. I'm looking for his locker room demeanor and comments to give clues to his state of mind. He really doesn't have a filter between his brain and mouth so it should be easy. On that front, so far so good.