+1 to this! We can export feedback submissions but have no way to import them. Since we're able to import pretty much anything else, being able to import existing submissions or those from a third party would be huge.
I agree with this as well. Sometimes our (potential) customers submit their feedback on paper forms, for example when we visit tradeshows. We process the results from these survey's in Excel and we would like to import them into HubSpot. It would be great if this would be possible.