I'd watch a season 4. Lynch said if people loved The Return he'd do more, but the hardest part is sitting down and writing it. Showtime said the door is always open for David. All the people asked said they'd do more in a heartbeat.
I just can't imagine what a season 4 would be.
Personally, I don't need the search for Audrey. (Though, apparently there were issues getting her on board, and maybe that's why her part was so small?)
I don't know what I'd want it to tell me... I don't think I need "answers".