Good morning, Alex.
Yes, improving the UX for datasets with a large number of files is a known issue and we are working to improve file related features on the dataset page. You can track the issue in GitHub here.
https://github.com/IQSS/dataverse/issues/2021As you can see in the mockup posted to that issue, we plan to add many improvements to the layout, including filtering, and an improved navigation/layout for datasets with a large number of files. I recommend you add your comments to that issue, so that you can get notifications on it's progress and contribute to the discussion.
Please let us know if you have any additional questions related to this feature.
Mike
Michael Heppler
User Interface Designer + Developer
Dataverse, Consilience, Data Science at
The Institute for Quantitative Social Science
1737 Cambridge Street, Rm K333
Cambridge, MA 02138
617-496-2450mhep...@hmdc.harvard.eduwww.iq.harvard.edu