Who should play David and Amy? Any two actors who look like real people, and not like Barbie and Ken.
Excuse me, but aren't David and Amy cousins, albeit distant cousins? Do we really want to broach the possibility of incest on Dark Shadows? (But, then again, didn't Laura Murdoch-Stockbridge marry both Edward Collins AND Edward's grandson, Roger Collins?)
As to possible current actors for David and Amy, how about:
Anson Williams and Ann Heche or,
George Clooney and Penny Marshall or,
Sean Penn and Kathie Lee Gifford or,
Tim Robbins and Shannon Doherty?
Of course, as a somewhat older Buzz Hackett, how about the multi-talented Richard Grieco? And, as the Eagle Hill Cemetery Caretaker, the venerable Bill Macy from "Maude" would be just perfect. My choice for bartender Bob Rooney would be the always loquacious Malachy McCourt.