I've been a Box Admin for 10+ years and I've met zero users who prefer to only see 20 items per page. I recommend either changing the default to 100 for everyone or at least allowing Admins to configure that as the default for all users in our Enterprise. When I set up a new users I log in to their account and change this for them as many people dislike the WebApp partly because they have to scroll through so many pages and they aren't aware that they can change this account setting.