From what I know Indicator applet is meant to have those features since the applet is designed for the purpose to have all those things in one little applet. When you right-click the panel you should see all other applets and my suggestion would be to test out all of them to see which one you'd like to have and which one is redundant to your needs.
If you want custom panel applets this thread might have more information about it:
If you want to do things from terminal here is the solution for you:
