OK, I am of course aware of these aspects of GDPR.
Your post sounded a little bit like it is a requirement of GDPR that respondents can access the data that they gave to a survey immediately after the survey.
While it would be great to have this automated, I think for most cases doing this manually is probably not a big deal for a couple of reasons:
- Most respondents are fully aware of the data they are providing to a survey
- This information might often not even contain personal data
- Personal data might be disconnected from survey data (well, not in Limesurvey, hahahaha, only if you do it manually)
- The data might actually not remain on the survey server, but will be downloaded for analysis purposes and later deleted from the survey server
- As you said, respondents to a survey usually are not that interested in the data they just provided voluntarily. And in my experience of a couple of years of research, no one has ever requested their data to be deleted or wanted to see what data has been stored, in any country I have done research in. This might change with people being more and more aware of rights through GDPR, but as market researchers we generally have given this right to respondents before already. At least the ethical ones.

- In general respondents that gave their responses freely and voluntarily have very little interest in getting this data. There might be very specific projects where this might be a little bit more delicate of course and the share of respondents who would like to have access to this information might be higher.
So I am not saying, that there might not be cases where people will make use of their right, but for most of us, these cases are probably very rare and a manual process should be easy. In many cases there might not be much to provide anyway, if you separate personal data from survey data and delete personal data in a reasonable time.
Now for panels or big institutes with a huge survey turnaround, an automatic approach might be interesting because the costs of implementing this might be lower than the costs of manual proceedures over time. But I guess they'll spend some money on a different solution anyway.
@GBMIMM: By the way, this is a general discussion and not related directly to your request. Your requirements might have good reasons. I was just asking Jelo if there is something in the GDPR that I am not aware of. But seems like we are on the same page there.