I feel like alot can happen in a season, so I think they'll get a scene or two at some point
I think there is too much going on already this season, but as long as Kat is still around...I'd love their storylines to merge a bit more again.
I feel like their relationship could be really interesting if explored. I think it could add alot to Elena's character and her arc, while also giving Kat a bit more of a purpose than she has now.
I just love watching Nina acting opposite herself. It really showcases her talent