Boba Fett didn’t do shit in the original films. He was one of a bunch of bounty hunters looking for the Millennium Falcon. He follows the ship and calls Vader to come get them, and Vader doesn’t give a shit about Boba Fett so he decides to test the carbon freezing on Han, and Boba Fett is like “aww cmon man I need dat money” and Vader is like shut the fuck up Boba Fett I’ll pay you if shit goes wrong just let me do my evil shit. Then Boba Fett just hangs out with Jabba until Boba fucks up his jet pack and falls into the Sarlacc. Beyond that, the most information the audience gets about whether or not Boba Fett is important is Han saying “Boba Fett!?” seconds before Boba Fett dies. He first appeared in the Star Wars Holiday Special for Christ’s sake. George Lucas had to digitally insert him into scenes later on because he was never intended to be important.