Having an official brand page would be nice. This should include the osu! logo and the official color palette with maybe some design guidelines on how to use them similar to how other companies are doing it.

This might help in making contributions to osu! and related third-party projects look less divided and closer to the original design.
References:
https://www.twitch.tv/p/brand/
https://www.youtube.com/about/brand-resources/
https://whatsappbrand.com/
We already have a brand guidelines document since flyte likes making that kinda thing. It's been a private thing until now, but I see no reason we can't publish it if it's not a super-high-effort task. @arflyte
Above is the current guideline we have; covering mostly on logo usage. Pending for a major revision on typography, colour palette and general style guide. The newly revised guideline will be made available on Figma.
(Edit: Updated the file. Uploaded the wrong version)
Is Exo 2 likely to remain the primary font face considering the recent change to the font used on the forums?
Exo 2 will phase out, and no longer be the primary font in the near future.
Don't forget the design pack that the pdf is refferencing and forcing you to use
@arflyte some notes after looking at the guidelines
Use the guideline attached above, not the one included in the package. The package is pretty old and hasn't been updated for quite some time since it's only been used internally.
We're no longer using the colour swatch too. The only thing that's still valid in the guidelines is the logo usage.
Closing this as it is now available on the wiki and should continue to be expanded there.
Most helpful comment
osu! Identity Guidelines.pdf
Above is the current guideline we have; covering mostly on logo usage. Pending for a major revision on typography, colour palette and general style guide. The newly revised guideline will be made available on Figma.
(Edit: Updated the file. Uploaded the wrong version)