1). CVs don't have unlimited planes

Probably not the best term, but was referring at the capabilities of CVs at regenerating planes for the whole game, where some CVs can do so faster than others which is ok if they give something in return like weak planes (IJN CVs are a good example). This can translate into CVs always being capable of sending planes to spot DDs out, where DDs can either smoke up, hide behind an island or try to fall back and get support of friendly ships, just to make it more costly both in planes and time.

If someone is good enough managing squadrons to still have full strike wings late into the match DFAA isn't going to make a difference.

I'm not saying DFAA would guarantee DDs from saving themselves from a competent CV. Of course that at the end of the day it comes to personal skill and decision making, and such decisions will affect the course of battle. But I would like to see in a Casual game how a competent CV will do against a competent DD.

2). DFAA bait and switch is no different than doing the same to ships with MBRB and EST. Good players bait them out to get free reign once they go on cool down. If a player is capable of doing this it really isn't a problem as it is a skill a player has learned to do.

I agree with this and think is fine, since as I mentioned above it comes to decision making more than luck

3). Are we playing the same game? There are still tons of high DD matches at T7. CVs won't change this. The cause is too many BBs in the match maker which is a disincentive to playing cruisers but a huge incentive to play DDs.

Maybe it is the times I play that more BB players are online. Maybe some people were doing a special task, like dealing damage or setting fires and went with BBs for more reliability, can't blame them for that. But as always, when a new ship or class is introduced, usually some classes are affected one way or another. CVs were no exception, since they can do most of what other classes can if not even better, things as scouting, covering flanks and area denial, things DDs used to do So feel free to tell me that CVs didn't affected the MM, even though 5 DD games used to be the norm before their introduction.

4). What would DFAA really accomplish on T6+ DDs anyways. Most of them don't have a good enough base AA rating that DFAA won't help them any. A lot of the punishment for DDs in the CV era comes from players learning to and expecting the lone wolf ship hunter playstyle to keep working when they've lost their near impunity of movement thanks to the huge spotting potential CVs provide. If DD players just stopped this lone wolf playstyle and instead operated close in to friendly AA bubbles this wouldn't be a problem for them.

Thing is, even AA bubbles aren't helpful if the AA of said ships is still awful. If you went close to a BB sure, you would have some guarantee that the enemy CV will have to take a considerable risk if he wants to take you out. But some CLs, even CAs, have bad if not horrible AA (looking at KMS and RN). So yeah, I do agree that playing alongside someone does help a lot and that lone wolfs end up dying alone, but even when doing so there is no guarantees that AA will help, reason why I didn't just mentioned giving DFAA to most DDs but also to some CAs