One thing that I've just not really grokked about the movie is how they get Pearl's memories back. Like, most people seem to think that Greg fusing is analogous to Rose dying, but eeeehhhh...

Greg not being present for like three minutes is not the same thing as death. Pearl wasn’t in love with Greg like she was with Rose. Reset Pearl knows what fusion is. It doesn’t add up to me that this one event alone would somehow constitute every significant point of her past and bring back her memories.

Personally I’d like to have seen Mystery Girl make an appearance at the gig. Pearl remembers her infatuation (maybe still even has the phone number in her gem), Mystery Girl inspires her to calm down, loosen up a little, maybe break some rules. Pearl gets to re-experience love and rebellion before maybe experiencing loss by some other fashion.