The redditors that whine are the same ones who would leave Lae'zel in the cage in act 1. As she also have a lot of dialogue and opinions on mattersಌ plus, if you build the friendship with her and romance her, you find out also that she actually quite the romantic.. if you give her the chance to show it, that ဣis.

I would also add, however that I would love to see a DLC or something featuring events after the death of the Netherbrain. Akin to Witcher 3's Heart of stone or Blood and Wine. Where an optional prologue act could be where you are in Avernus with Karlach to fix her engine to survive being back outsode hell and story could be where the main antagonist is Vlaakith where the quest stor♓y depends on whether she consumes Lae'zel after remaining loyal or having Lae'zel with you to kill Vlaakith in the name of Orpheus.