But what would be fair? Who should pay for the corrections of those mistakes?Hindsight is 20/20, especially when you look back on design. The designers do their best, but they cannot know for certain what will happen when they introduce something new into the game. Especially when you have different designers.
FFG has not released a ship that is unusable or unfair. Maybe it wasn't as effective or powerful as you wanted it to be, but the ship was playable and fun. I still used TAs before the Raider! I continue to use Defenders. This game is not JUST about high level tournament play. It is about casual and epic as well.
That being said, the only "mistake" that FFG might have made was in the phantom. No one paid for that fix. FFG has also done a stand up job of not forcing players to buy anything. While some complain about the damage deck ruling, I applaud it. Even in tournaments, there are many casual players that attend and often do not buy more than the ships they are interested in. This is not the norm in such games. Most games force to you throw out your collection to start again every year or so!