Who thought it was a good idea to potentially bring back Jock Ewing with a new face or re-cast (which they briefly did) Pam?
This is one of those things in long-running series that can happen when the original dynamics have been exhausted. Was there anything that hadn't happened between Cliff and JR or between JR and Sue Ellen?
The only seriously missed opportunity I can think of is to have Katherine (as Bobby's wife of fiancée) live on Southfork for at least half a season. Sh*t hits the fan when Bobby and Pam discover that they still love each other, etc.
So there's the option to create new dynamics with new characters (not many of them are super-loved by the Dallas fanbase) or to hark back to previous characters, in this case Jock.
As I've said before it's all a bit more challenging for a story that centers around a relatively small group of people (the two families) but even the community soap PEYTON PLACE had pulled a "Pam Ewing" when they couldn't let go of Allison McKenzie. Two big story arcs played by two actresses were connected with Allison's mysterious disappearance.
I'm not defending lazy writing but I don't think Wes Parmalee/Jock falls into that category. It's nuts and over-the-top but something needs to be done to keep the episodes coming.
Somebody was stupid. And there was a disconnect between the DALLAS producers and the Lorimar executives, because as Katzman/Paulsen/Lewis trio began quickly cutting Donna Reed back in the scripts significantly, the brass at Lorimar extended Reed's contract for two years.
I don't know the details that caused the disagreement between Barbara Bel Geddes and the makers of DALLAS, but it's tempting to assume that they thought that the success of the series had made the continuation of the series self-sufficient, which was even more evident in DYNASTY.
I could imagine that, being ratings hit, the people at the top would become a little power-drunk and that it wasn't necessarily about the nature of BBG's requests or demands but the very idea that she had the "nerve" to challenge DALLAS' indestructible machinery. But I'm just speculating.