Remote PowerShell on Target Machines task in TFS/VSTS is awesome. Easy to use and it works. The only things that bugs me about that task is that I don't see the output of the script on the build console output. Luckily, this can be easily fixed. All you have to do that is to use Write-Verbose -verbose instead of Write-Output command inside your PowerShell script.
For example, instead of:
Write-Output "Remote script is executing step 1-2-3"
use the following
Write-Verbose "Remote script is executing step 1-2-3" -verbose
You should now see the remote script output in build console.