Command and control is so discombobulated at TSA, I don't think you can point to a system-wide change in any direction. TSA culture is Balkanized by airport. Within the last few months I've had positive opt-out experiences at JFK and SEA, very negative and confrontational ones at PHX and, again, SEA. Some TSOs are cordial and reasonable, some definitely not. I don't think the top brass could orchestrate a "charm offensive" if they wanted to.