Progress bar for current "Transferring" BITS Transfers with a time remain calculation.

GetBitsTransferProgress.ps1

while ((Get-BitsTransfer | ? { $_.JobState -eq "Transferring" }).Count -gt 0) {     
    $totalbytes=0;    
    $bytestransferred=0; 
    $timeTaken = 0;    
    foreach ($job in (Get-BitsTransfer | ? { $_.JobState -eq "Transferring" } | Sort-Object CreationTime)) {         
        $totalbytes += $job.BytesTotal;         
        $bytestransferred += $job.bytestransferred     
        if ($timeTaken -eq 0) { 
            #Get the time of the oldest transfer aka the one that started first
            $timeTaken = ((Get-Date) - $job.CreationTime).TotalMinutes 
        }
    }    
    #TimeRemaining = (TotalFileSize - BytesDownloaded) * TimeElapsed/BytesDownloaded
    if ($totalbytes -gt 0) {        
        [int]$timeLeft = ($totalBytes - $bytestransferred) * ($timeTaken / $bytestransferred)
        [int]$pctComplete = $(($bytestransferred*100)/$totalbytes);     
        Write-Progress -Status "Transferring $bytestransferred of $totalbytes ($pctComplete%). $timeLeft minutes remaining." -Activity "Dowloading files" -PercentComplete $pctComplete  
    }
}

Made some formatting changes, if you're interested - https://gist.github.com/n-engelhardt/ca6157c0a8409ac94a42cdbafebb8278