Think about what your users might expect from a product like yours. But each in one of the following categories:

• Basic Needs: features that people will expect and be dissatisfied if missing but not excited if available
• Performance Needs: features that people are excited if available but dissatisfied if not available
• Delighters: features that people will not expect, thus not be dissatisfied if not available but excited if available.

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While the Delighters are what sets you apart from your competition, you shouldn't forget about the Basic Needs!

This concept is calld the Kano Model .