Actually, it makes more sense in scripture to view the apple as the fruit of the tree of life. The mulberry appears the best candidate for the fruit of the tree of knowledge of good and evil.
I trust you are proposing this theory in the hopes that God will get mad and come down and straighten you out. I agree, that would be nice.
Pomegranite? Instead of apple? Could be, they have some similarities. But the pomegranite is sorta tart, while the apple is sweeter....But, not as sexy, and the fruit of the tree of life is identified in the Song, as sexy.
I'm still hearing apple, when I ask God. What are you hearing, when you ask?
Still hearing apples. But, it's metaphorical. Or so I'm hearing. Something like, apples today are closest naturally to what the tree of life represented. Which is Him. But, pomegranetes are close. Close enough. Eat and rejoice.