Country flags, local time, color IDs, and the like are already in the codebase, they were here before the infinity fork. They should still work. Although, a lot of the code is getting rusty and that's why it needs a refresh and polish.
Out of all the plugins that frustrate me right now, it's post-hover.js - I've been trying to figure out a sane way to get it to be a little more.. portable. It doesn't like to be used outside of the boards themselves (and I really wanna use it on the index). Ideally, having it pull from the API would be the cleanest way to grab the data.