The Scalability system is s one of the most ‘old-school’ ( still text-editor based) but at the same time most important features of UE5 as it allows you run your game on all target platforms. I created a utility widget that can read .ini files ( with the help of some C++), display them, boomark them and save them back or create new files. With the latest version, even allowing you to compare several .ini files at once.
It uses a combination of C++, Blueprint and Editor Utility Widgets.
For more details, give this a read
https://www.fab.com/listings/32564c9f-5ace-4d02-bf81-2adf01188a4b