POC: replicate parameters of a called script as parameters of a calling script

dyn_param.ps1

using namespace System.Management.Automation
using namespace System.Collections.ObjectModel

function inner {
    param(
        [int]$Value
    )
    $Value
}

filter convert_to_runtime_parameter {
    $parameterData = [ParameterMetadata]$_
    #if($null -ne $parameterData -and(![string.IsNull])) {
    if(![string]::IsNullOrEmpty($parameterData.Name)) {
        $attributes = [Collection[System.Attribute]]::new()
        $attributes.Add([ParameterAttribute]@{
            Mandatory = $parameterData.Mandatory
            Position = $parameterData.Position +1
        })
        [RuntimeDefinedParameter]::new($parameterData.Name, $parameterData.ParameterType, $attributes)
    }
}

function outer {
    [CmdletBinding()]
    param (
        [Parameter(Position=0, Mandatory)]
        [string]$Target
    )
    dynamicparam
    {
        # Set up the Run-Time Parameter Dictionary
        $dynamicParameters = [RuntimeDefinedParameterDictionary]::new()

        # Begin dynamic parameter definition
        $targetParameters = (Get-Item -Path Function:\$Target).Parameters.Values
        $targetParameters | convert_to_runtime_parameter | ForEach-Object {
            $dynamicParameters.Add($_.Name, $_)
        }

        return $dynamicParameters
    }
    process { 
        $cmd = $Target
        $PSBoundParameters.Remove("Target")|Out-Null
        #Write-Host $PSBoundParameters
        #$PSBoundParameters|Out-String
        & "$cmd" @PSBoundParameters
    }
}