Good questions. The Network Manager statistics are available now (see following KB article):
The PI Firewall settings are not available yet. However, it turns out we just implemented this and will be available in the next release (thank Brian Young for that!). Look for next release to come at the same time as PI Server 2012...
I missed the "Get-PIConnection" cmdlet; I was looking for something mentioning Network Manager.
Glad to see the firewall is in there for the next release.