playing Nisha is the best way to play the game, hands down. Sucks that we don't get the other characters perspectives from an interrogation perspective. Like Nisha dies in a side quest you can totally skip or never even see during a playthrough of borderlands so she could still be alive if they wanted to just say she never met the VH 2.0 crew or since the 2.0 crew are now NPC they could talk about the gunfight with Nisha and how it was a close fight given her action skill. What i'm saying is they could bring her back by saying she barely escaped the VH 2.0 crew or played dead if they really wanted; imagine a Borderlands 3 dlc about Nisha attempting a redemption arc parodying Red Dead Redemption and other cowboy movies.
Or even straight up revenge since when you think about she was really into Jack and on top that she was pretty bad, she looked at robot genocide and was happy, it's kind of like how when it come to Wilhelm in this game you expect like a story of how he became the way he is like everyone else but with him its actually pretty simple, he had a physical condition needed cybernetics and got addicted to becoming a cyborg and was just good at fighting, like literally he doesn't that what he does might be wrong he just wants to be paid, and while some of his moments were pretty funny, as an actual person type character he's pretty 2 dimensional, and Nisha is only slightly more 3 dimensional since she has a twisted idea of justice and law so it's likely if they do have her show up again they'll likely have her seeking vengeance, but yeah would be nice to have her be more significant to the story seeing all this I mean Wilhelm was a story boss fight so yeah P.S. sorry for the long rant had a bit to say