Possible Clues:

• Popular line in board game is such a wonder
• Swindler chosen to play Hooray Henry?
• Upper-class type may be such a wonder
• Adjective usually followed by 'wonder'
• Ineffectual character abroad left wearing cape
• Lacking strength of character
• Lacking an outstanding feature? That's a wonder
• Sort of wonder where a prominent feature has gone?
• Without outstanding feature? What a wonder!
• Nil is bad in game: is that such a wonder?