Treating tasks with respect. Tasks aren’t something you throw onto someone’s plate. Be polite and ask first.
The term is task management, so let’s start managing them properly. Integrate them into the project workflow. Keep them in context with the conversation that is happening. Allow users to attach the files that need to be filled out AND let the assignee attach the file they did fill out. It’s really just a more pleasant way to conduct business with your coworkers. Task management software as it should be.