With the first edition wrapping up, it would be fun to look back at which ships may have been over-used or under-used. What I mean by "over-used" and "under-used" would not necessarily be meta distorting ships that are so OP that you have to take it (such as the old Jumpmaster and Dengaroo), but the ships that are either not quite as good or as bad as the masses would assume in their selections of them.
For me, they are:
Rebels: Over-used: K-Wing, as many hear how good Miranda is (at the hands of the very good players who flew her) and try to spam her. Even with C-3PO or with a trajecting Nym and Sabine on board, she is only 1 agi with a bad dial, no repositiong without disabling weapons, and her healing factor is entirely dependent on being within combat range. She was surely overpowered, but better players with lists that were at least semi-mobile could easily defeat a netlisting scrub with her. Anecdotally, I am more or less only an average player, but I am 8-2 against Miranda in a tournament setting (not because I am good, but because she is way, way, over-saturated).
Under-used: Z-95!!!!!! This glorious artifact of the Republic is definitely not impressive with no native repositioning, and its only notable slot is the missile that can fit with its price point. I could never use this ship effectively, and it was a perennially low-ranking ship on meta wing. But those who knew how to work it, by either creating missile kill-boxes, blocking, or using Airen Cracken as an alpha-attack/coordinate ship before his death--it can work wonders. In fact, every Blair Bunke game with 7 Z's is a treat (yes, he flies the scum z's, but without illicits, they are just the same ship).
Scum and Villainy: Over-used: Fenn Rau and other Protectorates. That title is so tasty, and Fenn's ability sounds so good and incredibly, as it allows one to joust with a fragile ship and come out victorious. Or at least, that is what it seems. In reality, this ship is very difficult to fly properly, and its main feature--flying into the face of the opponent--only further tempts the variance gods. Plus, bombs are the death of him without considering every single move at least 3 moves ahead of time throughout the game. Can Fenn be good? Yes, if you are a very good player.
Under-used: Scum lists tended to be the most diverse of any faction, but I was surprised at how the Kimogila was not taken up all that much. It has an intimidating jousting ability for scaring aces and token-stackers, can bristle with munitions or decide to only take one secondary with extra munitions or choose to reload, can take pain-bot or unhinged astromech, and its highest PS pilots have very good pilot abilities that can synergize with the 1pt title. Yes, it has less than a b-wing's health with only a b-wing's agility, but is more cost-efficient, has a much better dial, the illicit slot, and in all is a versatile ship that could be built to a squad's specific needs.
Empire: Over-used: TIE/SF fighter, for being in the same boat as the K-Wing (except Backdraft is actually good whilst Esege is pure garbage). Great players can make Quickdraw really sing with a very good ability on a shockingly high-PS chassis with absurdly diverse and powerful slots and a jokingly high cost-efficiency. But mediocre players don't consider arc-dodging or properly approaching with her, so that rather than taking 1 shot a turn and bleeding those shields to punch extra damage, all the shields and the some of the hull pop off in one round. Yes, advanced optics/comm relay and debris gambit can tank, sensor cluster was good back in the day, and expertise can save that focus for defense, but she has a big target painted onto her. A broken ship does not make an auto-win, unless we are talking about Ghost-Fenn.
Under-used: TIE Silencer. On the surface, it seems like a direct downgrade from the Phantom for having 1 fewer attack die and 1 fewer defense die as well as a lack of the evade action--all for extra cost. But the dial with advanced sensors on PS9 allowed it to be anywhere and thus dodge so many shots, it always had a base 3 agi regardless of what PS shot it, could fix being out-PS'd by ISYTDS, could take autothrusters, had an entire 2 shield and 4 hull, had a soft predator built into a position-rewarding title that could turn into a panic-button for an atrocious roll, and could even out-point Poe or kill Corran (if the bid does not push you past Corran points). It is much more forgiving than it seems to fly.