This sounds like a terrible change that is a side effect of an unecessary change (removal of facing requirement on auto-attacks), especially without a dedicated Sheathe Weapon (only) keybind.

I'll need to think about this some more but I was wondering what thoughts others had on the matter.

To clarify, as a caster my primary Final Fantasy XIV Gil concern is being certain that I'm not getting hit with a gaze attack. The way things are currently, as soon as my cast resolves, I turn around and wait for the gaze to resolve. It sounds like with the 3.4 changes, I will have to turn around and sheathe my weapon. 

Turning around is one thing; as soon as I hit the back button, I am definitely turned around. But if I am also compelled to sheathe my weapon, I argue that I should have a button whose sole function is that it sheathes, and only sheathes, my weapon--not a button that will maybe pull my weapon back out when I want it away.

Gaze attacks have a certain charm from being a believable mechanic -- the thing prepares to appear horrifying, the players turn away to avoid the horror. 

Adding the extra requirement of disengaging detracts from that charm, as would the other possible interpretation of the quoted text where one might no longer have to turn around at all, but just disengage. In either case, I'm not a fan of this coming change.

The R3 button is a snap unsheath on controller, so there must be a way to do it on keyboard.

I don't know, in my opinion it is a bit unnecessary change.

All the gamepad players I know even the ones from my static didn't ever mention having problems with it. 

But it didn't change much for me, so if it helps others, I really don't mind.

As a bard there are times you briefly (and I mean VERY brief like maybe 1 or 2 GCD's MAX) drop out of Wanderer's Minuet so that you can still attack and move. Or I've heard of the use of Feint on MCH to do something like this as well since it doesn't make you "cast". Does this mean I no longer can attack and move even out of Wanderer's? what part of the feature are they speaking of? 

Because there is an actual game FFXIV Gil setting and a command. Being that I'm in Wanderer's 99% of the time the auto-attack thing is rather irrelevant to me but I truly don't follow exactly what they mean by "feature inaccessible."

I main bard also, and I forget what the original keybinding is (im on pc) but I have it set to button on the side of my mouse now. and it causes me to untarget the enemy and about face (turn around). I just keep the camera pointed at the enemy, as soon as the gaze attack is over, I hit tab to retarget and just have at it spraying my attacks at it. only people I could see this new feature screwing with his controller peeps.