Hard to beat at any point, although the final seasons were bloated with angels/god and other omnipotent beings. The ending of Sam and Dean was done very well. Getting back to their roots of witches and vamps and other non-godlike supernatural threats would be welcomed by most, if not all fans. A crossover to Buffy's world would be incredibly interesting and would probably generate a huge following! Dean hitting on Cordelia would be fun to watch! 😉👍🤪