Some cmdlets don't support this, such as the *-CsCommonAreaPhone cmdlets. It would be nice if -DomainController was supported to assist with deployment scripts in environments where AD replication comes into play.
For ease of installation, it would be nice to have the Deployment Wizard be able to install the prerequisites, such as hotfixes, features, and roles that are necessary for installation.
Similar to Exchange, SQL and SharePoint.
Right now there are no synthetic tests for OWAS. It would be nice if there were to help streamline deployments, health checks, and troubleshooting.
Right now, if you run this cmdlet, there is no output to the console unless you use -verbose. And even then, it's limited. It would be nice if there was standard test cmdlet output. It would be really nice if this cmdlet also supported pipelining, such as Get-CsKerberosAssignment | Test-CsKerberosAssignment.