Thinking about making a similar system for ODIs if there is interest, but there are a crapload of them, so not sure if its worth it. Especially considering being the top ODI nation really means jack-****, and whoever wins WC is what really seems to matter.
And the fact that I couldn't care less about ODIs. So what I'm saying is, if anyone else wants to spend time updating ODI and keeping track of them, we can work something out.
This system, for Tests, is really nice and the more I think about it, the better job I think Neil did. Unlike the ICC system, which really tracks temporary form, this tracks long term swings and class of a Test side over the full course of the FTP. Which makes sense, considering the FTP is the central program around which all cricket tours are related.