The template system Im thinking of would allow you to control several sites at once;
eg you could have 5 hosting sites with different graphical templates but all the features would be the same, hosting plans, prices etc and you could update all the sites at once from one admin panel. for example change all the prices, features.
An online tools page would be really neat, such as like...
etc.. etc.. that would only be avabile to be used by registered users, I have one something like this added into my control panel already but I just used cgi scripts and linked them to it, it'd be really cool if those were acctually part of the script.