Everybody liked Ray and Donna together -- their own little corner of the show, but Steve Kanaly admitted that although he liked Susan Howard and they got along well, he found Rau duller to play when Ray & Donna were happily married because she would be on one of her crusades and Ray would have challenging lines like:
"Sounds like yer doin' the right thing, Donnah..."
Miss Howard should have been around for one more season to help from Washington the Ewings get the family business' name back. But she'd been critical -- publicly -- about the use of The Dream, so, between that and Telepictures slashing the Lorimar shows' budgets, Susan Howard was a goner.
The very fact that Donna was staying in her hotel's "The Arlington Suite"
and she was placed in
all black at the steaming Southfork Barbecue (or was it the bridal shower??) proved Katzman was out to get her
a la "this star is fading fast."