I like how Elena meets her evil doppelganger Katherine & Katherine told elena that she learned that Klaus wanted to sacrifice Katherine to break the hybrid curse & Katherine went to rose for help & rose tells Katherine that she was take Katherine back to klaus at night & Katherine tricked rose to get vampire blood from her & Katherine tells elena that she wanted to become a vampire cuz klaus needed a human doppelganger to break the hybrid curse & if Katherine was a vampire klaus couldn't use Katherine to break his hybrid curse & i love when Elena becomes a vampire & elena added a red streak when she wore her hair curly & elena shoved the cure for immortality down Katherine's throat when Katherine tried to kill elena & qetsiyah used Bonnie's spellbook as a talisman & Amara, Katherine, & Elena's doppelganger blood to bring Bonnie back to life & Elena tells Katherine that her life made her that way cause she had no one to take care of her & Katherine was surprised when Elena told Katherine that she forgives her & Katherine cast the passenger spell & possessed Elena's body in the vampire diaries season 5
I seriously would've killed to have more interaction with Katherine and Elena we were so robbed obviously it would've been a strain on Nina but if it was possible gor there so many scenes or conversations I see in my head heck there is already a canon storyline I think could've also worked for Elena and Katherine if it was altered to fit if anybody wants to hear the change.