Some thoughts:
1. More people would probably rank tags if it could be done directly through the tag icon instead of using the pop-up window.
2. When searching for new tags, I’d like them sorted probably by relevance (say, some preference for: being a prefix, being a popular tag, alphabetical ordering).
3. When browsing through all posts tagged with some tag, I’d maybe prefer to see higher karma posts first, or to have it factored in the ordering.
4. Perhaps it might be easier to have a hierarchy of tags—so that voting for Value learning also votes for AI Alignment say
Also, navigating up/down with arrow keys and pressing enter should allow choice of tags with keyboard only.