With the release of Strixhaven meaning we will be adding the content from the book to the website, it's had me thinking about the way this website presents content from non-standard settings (partially due to the concerns for balance with some of said content within the book)
the current form of the website doesn't do too much really, aside from seperating some stuff on the frontpage, such as 'setting specific races', however with the fact that many people use this website to learn more about the game, I feel the website should take better effort to distinguish between core and non-standard content. Especially since, with the release of Strixhaven, the dev's are basically announcing their intent to have different settings have different amounts of player balance. (Strixhaven backgrounds give a free feat. And for older examples, the Ravnica backgrounds added extra spells to your class spell list)
[Content] is part of the [setting] setting, and may not be designed for play outside of its original setting. Check with your DM whether it is good to use if you are going to be using it in play
or something along those lines, just to denote that the content is not usually part of the 'base game'. I mean, I feel like we have a sorta responsibility to try to make the game easier on others, especially others who are getting into the game, since we do run a website like this, and making stuff clear that its not part of the normal should be something we should do.
Yeah the sources exist, but if you're a new player, something saying 'Source: Unearthed Arcana 1', 'Source: Xanathar's Guide to Everything' or 'Source: Strixhaven: Curriculum of Chaos' is kinda meaningless, if they even do read them