Currently, there is only 1 way to view Media Library - List view. If I have tons of photos, attachment and so on, then it will not be a pleasant view or to find a file in it (I don't think I can remember exactly the file name sometimes) even if I have 100 items of them displayed in list view.
It will be good that Grid View being implemented into Media Library. Users will have the option to view either in Grid View or List View and that will greatly improve the visibility of it. Can't wait to see this happen very soon.