That's not quite what I had in mind.

Meaning

Your proposal doesn't meet my expectations.

Examples

• John: I think we should use this strategy for the campaign.
• Alice: <b>That's not quite what I had in mind</b>. It's too risky.
• John: What would you suggest then?
• Alice: Something more conservative. <b>That's not quite what I had in mind</b> with your initial proposition.