I agree quite closely with this. Some folks have also found that there are too many time pressures on them currently to really help with ETHPrize stuff, and so I need to focus on getting the report out and open sourcing the data analysis and UXR tools we use so that everyone from across the community can easily gather their own research and do UXR with good data insights at scale. This means it will be a while before we can get formal bounties behind this as only Mitch and I really have time committed to the initiative right now. If anyone else would like to help (do interviews, handle admin, PM bounties and teams, organise and herd all the cats), you are more than welcome!!
The beginnings of that are happening above. There is also a kaggle data set made from the spreadsheet you see in analysis there.
On topic again, I think it’d be great to start with seamless logins for everyone (as this will likely also help with transaction signing a little later down the line). We can start here, for instance: ERC-1077 and ERC-1078: The magic of executable signed messages to login and do actions