Regarding (1), I am going with Following
Which seems sort of obvious now that I think about it 
I changed
js.filters.unread.title
js.filters.unread.title_with_count.one
js.filters.unread.title_with_count.other
It also seemed appropriate to change “New” to “Recent” (or perhaps “Recent Topics” since “Latest” means posts)
via
js.filters.new.title
js.filters.new.title_with_count.one
js.filters.new.title_with_count.other
The option to add an unread posts count to “Latest” would be ideal, because Latest refers to posts. How can I do that?