I say one engine for one plane.
My car only needs one engine.
For crying out loud, give em a V-8 if they need more power.
And Rolls Royce engines?
What’s the matter with a good old Chevy engine.
They probably want grey poupon mustard on their sammiches, too.
The beauty of having more than one aircraft engine becomes brutally obvious when you have an engine failure and your jet becomes a brick.