A question is: Is the Phantom underpowered without ACD? I think its possible.
No, not even close to underpowered. Compare a (hypothetical) generic PS 2 phantom with hull upgrade to a rookie pilot. The phantom pays 6 points for a permanent +1 attack, (arguably) a better maneuver dial, and three extra actions in its action bar (barrel roll, cloak, evade). This is a pretty nice deal considering the fact that a HLC is 7 points to add +1 attack at range 2-3.
The power creep of removing the low and mid PS ships (like the generic Xs) is incredibly saddening.
This isn't power creep, it's just a metagame trend that favors high-PS ships. Power creep involves new stuff making old stuff obsolete, not Wedge and rookie pilots trading places in popularity. In fact, some people like the fact that the metagame is favoring named characters instead of a horde of math-efficient generics because a lot of those characters are fun to use and it's frustrating to never get the chance because generics have better math.
It feels like C3PO will give about 3 evades per game, assuming the opponent focus fires the Falcon within 2 or 3 turns as they should. This for 3 points.
Your feeling is off. C-3P0, assuming ideal conditions (no bonus defense dice), adds 5/8 of a HP every turn that your Falcon takes fire. To get 3 evades per game you'd have to take fire for an average of 5 turns, not 2-3 turns. If focused fire is killing the Falcon within 3 turns you're only getting 2 HP from C-3P0, which is worse than Chewbacca.
Chewbacca gives ~2.5 "evades", by restoring 1 shield, and removing a damage card, which is sometimes a direct hit or an important crit. Other times, its a facedown card or a non-relevant crit. This for 4 points.
It's more than 2.5, really, because you're either using Chewbacca when you lose your last HP or saving him for a double-damage crit (or something equally nasty). So unless your Falcon never takes a meaningful crit before dying you should always be getting the full 3 HP (or equivalent in serious crit canceling).
Edited by iPeregrine