With puppet or chef you can basically tell the server to install several mods when the vm is being started. So lets sa you would like to install all the mods against ddos attacks then you would be able to do that for every server who is being setup with that cookbook (chef)
It would be very easy for people to install complex servers with just one click of a button.
We the control panel i would like to see added are
They are both very good and fast. This would make the list complete.
I have just tried to add powerdns to virtu but it can't connect. I for got the command to let a remote server get access to powerdns server and access the mysql database. Thing is build on debian. Not a debian person. So i am not sure if all the commands i know are working. However i think it is iptables blocking the incoming ip of virtu server.