@nathantaylor and @carrieseltzer This was my thought for a request as well!
Some of my uses line up fairly well with Nathan’s. For instance, in taxa that I work with a lot (like anoles), it would be really useful to have a field that has my ID for the observation. When I get undergrads to work with anole data from iNat, I just have them add a field to their csv from iNat for my ID and then they add info that manually, but this does take some time. This is nice to have for projects because we can say that all IDs were verified by one person.
I also agree that it would be really interesting from a more sociological perspective to see the IDs that individual users add. You can get a little of this now by seeing the total agreeing and disagreeing IDs on an observation, but a finer grain of detail would be nice. For instance, we’ve often thought about trying to quantify what anoles are harder to ID if we had ID history for observations, but we can’t do that with the data we can currently access (other than to see average correct IDs using the num_identification_agreements and disagreements fields). As a specific example, we thought it might be cool to try to quantify whether participants in one of our projects (Lizards on the Loose: https://www.inaturalist.org/projects/lizards-on-the-loose-2018) improve their IDing accuracy over time, but we can’t figure out an easy way to do this with the current data export. I did do this manually for a subset of observations, but coding it by looking at each observation individually was a lot of effort!
One way I could think to do this is to just give fields with each identifier’s user_id (already included for uploader) and their taxon ID (like 116461 for Anolis sagrei). This would make it easy to incorporate user IDs as effects in statistical models and the taxon ID would be interpretable as well. Anyways, this info would be cool to have!