I think blesta has bigger things than the fine tuning like server statistics at the moment such as domain management etc. Blesta is developer friendly and open 99.9 for a reason, with such a great platform they allow you and others to create custom solutions so that the blesta experience can be enhanced even further. Plugins and modules don't effect core files so on upgrade nothing needs replaced. Eventually I'm sure blesta will impliment a beautiful widget to display graphs etc but development is time and money. I just ask you to keep a more open minded approach.