Lets just say that I have an awfully good idea on what is coming because I have mutant powers of precognition.
... and you are observant and have plenty or applicable common sense.
There's exactly one thing anywhere that mentions Black Sun, and it's in the flavor text of the Bandit Squadron Pilot; there's no such thing as valid extrapolation from a single data point.
Back on topic...
Yes, the Tie Advanced might cost a little more than it should. But, like Magnus said, it is not an auto-lose either. It is sturdy and, thanks to his reputation, tend to be very low in priority list of your opponent. I personally had good success with it, not just with Vader. Trouble is, I could have been served just as well with another craft. So, I never been let down by the ship, but I don't tend to include it either because it doesn't bring something unique like the other ships do.
I've been let down by it. The problem isn't that it's an auto-lose; it's that, as Magnus Grendel also acknowledged, every role it currently plays is done better by another ship (and most of those other ships are the TIE Bomber--which is its own problem, given the Bomber's own relative lack of popularity).
More fundamentally, the problem is that it's a fighter with really great defense in a game that doesn't really value defense. It's a good closer against some ships, but that's because when it's the last ship you have, your opponent finally has a good reason to shoot at it. In my opinion, what it needs is a sort of taunt mechanic--although preferably something on the subtle side, rather than the club-to-the-head of Biggs.
And regarding the point cost. It's funny that some players can go to the lenght of dropping their team value to 96-97 pts to be sure to get initiative and yet, including a ship that cost maybe 2-3 points too much is out of the question.
I'm slowly coming to the conclusion that for the most part, the game isn't as sensitive to errors* in point costs as most players believe. A 2-point discount on a Prototype Pilot is a big deal--its cost decreases by over 10%. But a 2-point discount on Tycho + Push the Limit + Stealth Device is less than half his cost, and it's frankly a lot less noticeable.
(I'm deliberately ignoring, for the moment, the difficulty of determining the true points value of a named pilot.)
So, to reiterate somewhat, I don't think the Advanced actually has a cost problem--I think it has an ignorability problem. That's why a Chardaan-Refit-style fix won't work for the Advanced, actually, and why I think whatever FFG comes up with for the Advanced is going to have to be a lot tricksier.