They may not break up Donna and David. I suppose they could be mentioned as being together without showing David on-screen. But you're right about what Tori said. She wants to be a "MILF" on this show. LMAO!! So who knows. I just hope the writers don't make things worse than what they were in Ode to Joy by reinforcing Kelly/Dylan. That's my main concern.
You're right. They could mention David and not show him. Donna will probably play such a small role that it won't matter if he's not shown. Even though Bren/Dylan are my sentimental favorite couple, Jennie and Jason stuck by the show when those two left, and I care more about them getting together on-screen. I'll be happy with a mention that Brenda and Dylan are together, but I want some on-screen closure for Kelly/Brandon. The reason that I'm paying attention to the spin-off at all is to see Kelly and Donna to a lesser extent. Hearing that Jason might be interested in appearing gives me hope.