Possible Clues:

• Romantic novel italicised
• Cities laid out in a way that's impractical
• Impracticable cities laid out
• High-minded
• Do such people have an aim? Register one charity first
• I hand out endless criticism about one striving for perfection
• One twitching after securing bargain is expecting too much?
• Naively impractical
• Impractical fancy heel before one that's conservative
• Romantic slur italicised