Hey, you still have the certificates provider in v2 so you can access any certificate by Set-Location Cert:
What do you mean by export? Do you mean to a cer file? Do you want the private key? Are you just looking for the thumbprint? Also are we talking about certificates in the user store, the computer store or a service account store?
For password complexity and age, are these computers domain joined? Are you trying to verify that group policy is working correctly or something like that? Or are these non-domain joined computers?