ETA on Advanced Class change?

If the cost is high enough, that's consequence enough. I have changed a race on one of the characters I started pre-sub for the cost of ~ 800 cc. It took me days to decide. But now I have a character I believe in.

Not having an AC change might result in an abandoned character at a high level that otherwise might have made it through Chapter 3.

TBH, I have no problem with people going through multiple runs of the starting/capital planets - it is by far the most enjoyable part of the game where you can roll in dropped gear and simply have fun without worrying about anything but having a blast. For the past two days, I was basically unable to get past Watchtower/High Security on Belsavis with 2 characters between the distances that need to be travelled, mobs, incorrect pointers to the quest area right through the Imperial base (the sort that kills you, not the sort you are supposed to squash), inventory and crafting for a younger toon. Plus, I am having an unending debate of what to do next on Tishujen that includes a juggling of Guss Tuno's 1000 kills and AP level balance between convos and gifts, Rigg's re-equip at level 45 or 47, his class quest on Balmorra, 95 Planetary Commendations and the cost of shuttle between Belsavis and the Fleet. Makes me want to throw down the towel and just run Rhodion through Ord Mantell!

Let's not confuse the term Class, Advanced Class, Specialisation and Role any more than we need to

When you are queuing for the standard Group Finder content the other members of the group do not care what your class or advanced class is (This may change if you are doing Nightmare Difficulty content or Ranked Team Warzones, but those are best left to guild activities).
What they do care about greatly is your Role (DPS, Heal, Tank)

A Sith Sorc Healer may be different to a Sith Assassin Tank, but there is also a huge difference between a Sith Sorc Healer to a Sith SOrc DPS, and a Sith Assassin Tank to a Sith Assassin DPS.

I'm pretty sure I can change the spec and therefore the role of the charcter using the field respect option anywhere other than a warzone or Operation (it's been awhile since I did some FPs, but I was commonly queuing for both and respeccing when the group was formed)

You already have people obviously queuing against role in the Tactical Flashpoints (Sith Assassins specced as DPS but queuing as Tanks) if their ability use is anything to go by, but it's less of an issue as they are pretty much a faceroll anyway.

I'm not even sure where your sudden championing of Dual Spec (a feature that is irrelevant with the addition of field respecialisation) before AC swap has come from

Well, I tried to explain it from a logical standpoint. People ignored it. I tried to explain it from a business perspective from BW's PoV. People ignored it. So, I took your approach, and followed your other quotes in this very thread.

"There are so many OTHER features I would rather see added to the game before AC swapping ever becomes a feature." I agree with that. So, with that common ground, I agree that there are WAY more important features to champion and AC swapping really is at the bottom of the list.

So do I, but who am I to judge what's more important to others? Bio's call.

I'm not judging what is important to others, I am only expressing my personal view on the order in which I personally would like to see new content added. There are lots of features which should come WAY before AC swapping.

That's your business, what you prefer to see the devs focus on. But AC change is content. If it's in the game, it's content.

Ignoring and disagreeing are two completely different things.

So, you are pro-AC swap now, there's just a difference of opinion on the priority of its implementation.

I am not pro-AC swap. I am pro-implement other things first and we'll talk about AC swap. Just like you.

I never said it wasn't content. I said it was unimportant content to people like me and the wookie there. We both feel there are TONS of better features and content which should be implemented before they waste time and resources adding AC Swapping. Just my opinion of course. I have no influence with BW.

Not like me at all. I don't see the harm in AC swap. I've argued for it even though I probably wouldn't use the most likely implementation (One shot AC swap consumable purchased from CM). It would enhance the game on a couple of my characters if they ever implemented it as a legacy unlock feature (less likely). I won't get bent out of shape if its ETA is a few years down the road. If I need to talk about the merits of a different feature I'll discuss them in a separate thread.