Regarding your complaints
-Named Tie Swarms having no Rebel equivalent. Granted. This is entirely because the Tie Fighter is iconic and has tons of pilots while the Z-95 only has 2 in each of it's factions. I think you're overestimating the power of the named Ties as well. They do have powerful abilities, certainly, but we're also talking about the ship nicknamed "the soap bubble" by certain individuals on this forum. If unique Tie Fighters didn't have awesome abilities, nobody would take them since they're so fragile.
-The Tie Advanced was formerly the worst ship in the game prior to the release of the Tie/x1 title. It needed that free system. Badly.
-Imperial Veterans adds some nice options to a ship with a limited role and a rather glaring flaw (Low PS Tie Bombers really struggle to get Target locks), while the defender was inefficient and needed a bit of a boost (It did still show up in tournaments on occasion because it's unique capabilities allowed it to do things no other ship did, which allowed players who knew the ship very well to pull off surprising tricks). There's an argument to be made that the tie/x7 title went a bit too far, but we'll have to wait and see if the X7 Defender truly becomes a problem (How is it doing on Vassal right now?)
-Bossk is somewhat unique, true. On the other hand, no Imperial ship can do what Poe/Ezra/Luke can do. Nor is there a scum Miranda. And so on. Anyway, it sounds like your real complaint against Bossk was born of your metagame not following the rules, which is always unfortunate to find out, but can easily happen in a non-competitive environment.
-The Scyk... Is generally considered the worst ship in the game now that Vader no longer is going into gunfights with a foam baseball bat. While it can equip a Heavy Laser cannon for 23 points, that's more expensive than an X-wing or B-wing for an incredibility fragile ship.
-Horton ought to have had an EPT. Wave 1 had a lot of design mistakes.
-The Z-95 vs. the Scyk and Tie Fighter... The Z-95 is stronger in a straight up slugfest compared to a Tie Fighter in exchange for being less maneuverable. The Scyk I already mentioned.
-Ghost pilots do not have EPTs for Balance reasons. As for the TAP, the Inquisitor's ability is the only way a 2 dice Imperial Ace could function. At all.