It would be very helpful to be able to export multiple assessments in one report. If you have a course with periodic knowledge checks as assessments, it would be great to not have to navigate to each assessment individually, then click "assessment activity", then click export and choose a format, then download, then go back and do that multiple times just to get a report of all knowledge checks associated with a single course.
The assessments screen already looks like you should be able to select multiple assessments. Please allow admins to select multiple assessments for the assessment activity report!
The current functionality is a nightmare. With over 300 courses to check data for, this task takes around one day of work to complete. In other LMS that I have used, I was able to get a report that gave all data so that I could export it to Excel and use pivot tables and filters to analyse the data. I was therefore able to do the task regularly and this allowed us to improve the quality of our training and ensure it was fit for purpose.