How would we go about uploading and using a custom font?
I wanted to add lato per:
however it looks like I am in a CORS nightmare cause I would have to upload it to my own domain and give it CORS to rocket chat.
Yeah right now you’d have to host externally somewhere and bring in via css override in layout. 
Sounds like a nice idea! 
I think the proper way to go here would be to enable the Admin to upload those to https://your.rocket.chat/admin/Assets.
Then, one could reference it via /assets in the CSS-Layouts.
It would - in general - be nice, to be able to upload generic custom resources there, to reference them in CSS overrides and whatnot…
Cheers
Thomas