Ability to Freeze Headers in SharePoint Lists
I would think the ability to freeze headers in lists (some become very large) and being able to see the header (similar to how Excel provides the ability to freeze headers) while scrolling should be a given.
Lynn Li commented
There's a similar user voice request with more than 400 votes https://sharepoint.uservoice.com/forums/329214-sites-and-collaboration/suggestions/16077640-freeze-column-headers
I know a script can be added to a script editor Web part if the list is added to a page to allow headers to freeze, but then it will not let you exit classic view. Classic view does not let the conditional formatting I have applied to the list to show that colors specific fields in the list triggered by date entries.