It's not just people on here who disagree with you, it's also the Umpires, Players and Coaches - but what would any of them know.
In answer to your query, I would have been doubtful about drafting either; Ablett hadn't shown any signs of his future greatness; Franklin had shown more of his talent, but there were many who doubted his discipline and dedication. But if forced to choose, I would have chosen Franklin on what was known at that time; and Ablett if I'd been able to foresee the future.