I don't like the idea of Donna Reed being cast as some previously unmentioned Ewing relative.
I agree. It devalues the series much like when Jamie Ewing meandered down the Southfork driveway and introduced herself as Jock's niece. Prior to this was there ever any mention of Jason Ewing? Now if Jason himself walked the Southfork driveway and introduced himself to the Ewing clan then yes that would have been a kick arse introduction. So if Barbara Bel Geddes required some light duties or time off, grant it. The story back at
Dallas could have remained more or less the same. Is Jason friend or foe? The threat of reclaiming his stake in Ewing Oil could have made for interesting viewing involving him, JR, Bobby and ultimately Miss Ellie's return after her rest.
Now I'm wondering which actor could have given Jason some life and much needed spark to
Dallas.
Late edit...I'm thinking former western actor Ben Johnson. I think he could have fitted the role of Jason Ewing nicely as a former wildcatter, experienced oil man.