I've played this game for a bit and love it, but the past year and a half, I've barely played it at all and haven't bought any new ships. I've realized that moving forward, I just don't have the time and resources to keep up with it. That being said, I plan to hold on to my collection so that many years in the future, I can still play casually with friends and family. Most of my games will probably require both players to use only my collection, so I want to round out my inventory with whatever I need to try to make it balanced (while realizing that perfect balance is impossible).
For example, when I dropped out, unhittable and/or regenning aces were dominating. Any expansions or cards that counter them or bring them into balance would be beneficial. Any fixes for otherwise useless ships are also of interest. I'm not really looking for any new fancy features or abilities unless they correct a previous deficiency in the game.
Please let me know your recommendations on any final purchases I should make.
My Current Collection: I have two of the original core sets, one of the Force Awakens core set, and at least one of everything up through wave 7, plus the T-70 and TIE FO expansions. I also have the transport, corvette, and raider.