From the way its going.. Sumit Kumkum's dialogues (janam-janam saath..etc..) and keeping in mind Juhi's long break.. I'm guessing the creatives/writers are heading for a REINCARNATION track..
If they do go ahead with the reincarnation theme.. Pulkit can still remain in the picture (like they do have in every reincarnation tale told) as the link between the past & present (as in, after their rebirth). Pulkit..in his attempt to kill Sumit, might end up hurting Kumkum.. both Sumit & Kumkum die.. Pulkit will repent and remain to tell the tale..
If it happens.. it will mean that all the character artists will have to go.. Maybe the youngsters can stay (and become old in the process 😆) and see a miraculous tale unfold in front of their eyes.. their parent's 'true love' transcending barriers.. 😳