^ I think that scenario would be workable if
the Ent-B was under attack from another ship when Kirk bites the dust, rather than the Nexus. There would be a certain artistic flair in cutting from the Excelsior Class ship in a heated battle with a Romulan cruiser, to the Enterprise D doing the same "75 years later".
Of course, then the structure of the script changes, because without the Nexus you don't have a 'portal' through which Kirk can come forward in time and meet Picard. Unless the battle takes place on the cusp of the Nexus?