That is a cool looking website and it actually has some great charts as well, people usually use other websites and take a look at their chart sections for this. I mean sure this website has it all together and as one page, not saying it is totally useless, you could make this website your bookmark and just click it and check it time to time to see whats going on.
However, you can't deny the fact that all of these are also on some other websites whereas those websites also have other stuff as well.
I would suggest instead of trying to add these type of things to improve the website and have more features, I would say try to ask your current users (I am not one) and see what they would want improved, that way instead of adding stuff, you would perfect the ones you have.
Thanks for feedback!