One that I’d like to see is a more in-depth sorting option for posts (allowing you to see for example top of December 2020, or top of a specific day). A custom date range selection would be best. I remember this being a frequently requested feature in the early days of reddit, and they never implemented it.
I would love to see a truly wild and rich variety of skins that are radically different. Different uses of spacing, color, ways of organizing sections.
I feel like we lost that at some point - I remember winamp and windowblinds, and even just how custom web sites used to be. There’s so much potential available for so “cheap” that it could be a huge deal in terms of creating a flavor.
There’s a theming guide in the docs, and any bootstrap v4 compatible theme will work. You can build one with bootstrap.build