SCOM management server information via Powershell

We are running an implementation where we will be taking down our management servers for maintenance.

I want to run a powershell script that will:

a.Determine mgt server is healthy - I have a script to do this so checked off

b.Determine that the management server is assigned to the proper resource pool.  I have this script which looks pretty good.

PS H:\Users\la-wh24xu> New-SCOMManagementGroupConnection -ComputerName scomprdatacenter

$ResourcePools = Get-SCOMResourcePool



$ManagementServers = @{}


foreach ($Pool in $ResourcePools) {
    foreach ($Member in $Pool.Members) {
    #$Member.DisplayName
        If ($ManagementServers.ContainsKey($Member.DisplayName)) {
            $tmpArray = $ManagementServers.Item($Member.DisplayName)
            $tmpArray += $Pool.DisplayName

            $ManagementServers.Set_Item($Member.DisplayName,$tmpArray)
        } else {
            $ManagementServers.Add($Member.DisplayName,@($Pool.DisplayName))
        }
    }
}

foreach ($ManagementServer in $ManagementServers.Keys) {
    $PoolCount=$ManagementServers.Item($ManagementServer).Count
    If ($PoolCount -gt 1) {
        Write-Output "Management Server $ManagementServer is assigned to $PoolCount resource pools: $($ManagementServers.Item($ManagementServer) -Join ', ')"
    }
} 

c.I want to determine in the script the total agent count that is reporting to the management server/resource pool that is in healthy and unhealthy state.

Thanks in advance.