Hello,
Custom attributes are the only fields which can be updated by DLP users in charge of incident assessment on which you can apply filters, summarization and easily available in CSV incident extract used to perform executive reporting.
So this capability should be improved adding a way to define custom attributes value format (size, character type,...) and/or html type in UI (like a dropdown menu for fixed list of value, checkbox,...). This will allow DLP users to have a more user friendly UI.
Regards