MDT is a greate tool, You can create your own Default Task Sequence for Clients Servers!!
Normal i need to customize every Task Sequence that i create and that is so boring!!
I Create in this example a task sequence (ID & NAME) Server and Changed some things things like Windows Update.
So now go to to that Folder \\DeploymentShare\Control\Server
Copy the TS.XML
Rename the TS.xml file. I my demo Ward Server Deployment.xml
When you maken now what to make a new Task Sequence, You will see Ward Server Deployment Listed. Freaking Awesome!!