Microsoft say the details about Servicing Stack
``The servicing stack includes the files and resources that are required to service a Windows image. This includes the Package Manager executable, the required servicing libraries, and other resources. The servicing stack is included in all Windows installations.``

Is need has Servicing Stack for security ?
What improvement servicing stack is in Winreducer ISO creation ?
If not including servicing stack in Winreducer ISO has any problem ?