Is there anything to submit on github (or otherwise) to get a new ERC-20 fully supported by default with logo etc. so a user doesn't have to manually add it? Does anything need to be done for it to show up automatically when a user receives it?
The guide we used to have became broken thanks to 2020/06 schema which was just released 2 weeks ago and we are working on a updated guide.
The new 2020/06 schema still doesn't support displaying a logo though, but you are welcome to include any graphical design (including the logo) in the item-view (the section that is displayed typically after a logo).
I'll post a follow up if we can quickly do something about this.