What do we imagine when we think of Duffy having a non-entertainment, interactive attraction in the park(s)? An exploratory area like Tom Sawyer Island or Fortress Exploration? An exciting thrill ride? A simple "kiddy" ride? A game? Something else?
What about the theme? Teddy bears? Dreams and wishes? Adventure and exploration? Nautical or magical?
My ultimate dream Duffy attraction is, of course, Minnie's Co-op Workshop™. I think it would be amazing.