Functionally that would work pretty well, and I think I've mentioned something similar before. It would give Kim the catharsis that shes fixing the issue she helped cause and it would give Jimmy the punishment he's been avoiding in his descent into Saul and Gene.
I don't know how Kim re-obtains her bar standing in NM or obtains it in Nebraska that quickly. Shes now on record of being guilty for the defamation of Howard, concealing a death, etc. The only way in my mind this plays (and correct me if I am wrong, because I am certain you know more about Bar reciprocity than I do), is if they are on trial for something Howard related, tried together, and they claim to defend themselves. But then that diminishes the concept of Kim atoning and Jimmy finally getting his due.
There were two promo shots of both Kim and Jimmy for E13, so Kim doesn't seem quite done yet. Theres also the lingering scene with Walt, presumably with Jimmy.