Having played through the entire series this year, they’ve constantly communicated via their actions that they’re aware of what the previous game’s shortcomings were, and they acknowledged as much for BL4 in the marketing materials as well. As for Jack, leave him be. We’ve killed him, killed his fucked up clone, killed the AI preservation of his consciousness, and allied with the Terminator 2 friendly version of him via a body double/face-off situation. We’ve had enough Jack. Come up with a new good villain, lol.