I found 1 and 2 were games I could both replay at least once. With 2 the only bad bit to replay is bricks area where the devs just spammed a ton of very spongy enemies in a big map. 3 had more fun vault hunters mechanically but even during the first playthrough so much of it feels like filler content (like literally ALL of Hammerlocks area) and the final boss is somehow even more dissapointing than BL1, trying to play through a second time is at least 2/3 “Oh god not this bit again”.