It would be nice for Asana to implement or integrate with some add-on or service that allows Video Proofing capabilities in-task.
Something similar to what Asana already has with images (Business Plan), but with video.
There are other Project Management Platforms that already allow this. They do it using an addon.
It looks something like this:
And each comment you make on the video (again, while being in the task, as the video is an attachment in the task), becomes a notification to the assignee.
This would be crucial for teams that produce video.