Another alternative title was "The Undiscovered Country" but was changed to "The Vengeance of Khan" and then to "The Wrath of Khan" (info on ST6 can be found
http://www.mutantreviewers.com/rstartrek6.html )
I used 'crewmember' instead of 'nephew' because not all have seen the TV cut of Trek II (which was the cut Nicholas Meyer was asked to come up with for the rare ABC transmission in 1983, I think it was...) The theatrical and VHS/DVD version we'd been exposed to until the "Director's Cut DVD" lacks ALL references to the crewmember being Scotty's nephew (and, of course, the expanded scenes featuring him and Scotty, and an extended scene of Scotty pining over his death in Sickbay, which was wonderful to finally see... One reason of many why James Doohan hates Shatner's guts...?) I do prefer the Director's Cut edition myself...
Nicholas Meyer himself had made a mention of scenes being cut for the theatrical version, and said Paramount didn't care about the TV version. It's been a while but I distinctly remember reading something somewhere about Shatner wanting certain scenes cut because it took away from his glory. "Captain Quirk" is likely the reference I'm referring to... It's a great book. Of course, the author of that book may have been spinning things as well. So, it really wasn't a fact but an opinion as to whether or not the movie's scenes were removed because of time concerns, Shatner's ego, or some other factor...