Seasons 12 (per DVD count), what with its range war plot and Halleyville scenarios, should have aimed to turn more cinematic -- at least for a few months, rediscovering its western roots and filming in spectacular west Texas locations and national parks.
Instead, they went to Moscow. Which was a nice feather in DALLAS' hat, but even Larry acknowledged that "it didn't work."
I always want to see Miss Ellie bending over backwards to avoid bringing in law enforcement during the range war with McKay -- much to Clayton's and Bobby's consternation. To the point her reluctance becomes suspicious (is she protecting something hidden out there? Something maybe Wes Parmalee hinted at as he whispered in her ear just before disappearing??)
And they should never had made nicey-nice with McKay. Especially when Bobby was engaged to his daughter, much less after Tracey -- along with stalker April -- dies in Paris later.
I remember seeing or reading an interview with someone high up about the show, saying that after so much business plot in season 11 they wanted to get out and about and explore other ideas. They obviously had no idea that the business side of the show was one of the major factors of it's success - and the fact they went Halyville and range wars kinda tells me they'd given up at that point - what next, JR in an asylum...???!!!
Season 11 (DVD), the first year without Pam, was the last season which felt like DALLAS, flawed though it was.
There are a lot of people who hate Season 12 (DVD) more than even the remaining two years... I don't quite feel that way, but I understand their aversion to it.
The things they did for Season 12 -- getting out of the offices, the range war, Halleyville, the trip to "Yurp" and Russia, Sue Ellen's movie -- were all things I could tolerate, and reflected the program's desire to rediscover its Texas roots, among other things.
But the silliness hurt it. They needed to get a little grimier and edgier, with more of an atmosphere of Texas back roads and distinctively Texas corruption we hadn't quite had since, maybe, the 1978 miniseries... Sordid scandal, vile things buried deep in the past, lurid Lone Star political misbehaviors, etc...
That might have been the way for DALLAS to recalibrate for its final quarter or fifth sector, before the series exited.
Not that I think they should take on the Kennedy murder -- other than, perhaps obliquely -- as it's not really necessary. But this kind of thing, generally... Season 12 just seems like the time for something of this flavor: