Allow On-premise or hosted CROWD to Atlassian OnDemand CROWD connection

I would like to use my business Active Directory identity to authenticate to my Atlassian OnDemand environment. I could indirectly do this via the Atlassian OnDemand Google Apps SSO support. This would be an expensive route since my company does not currently use or plan to use Google Apps. Offering an on-premise or hosted CROWD to Atlassian OnDemand CROWD connection would be a better solution. A logical alternative might be a CROWD Directory Sync plugin to Atlassian OnDemand (similar in concept to the Google Apps Directory Sync - GADS)built by Atlassian or a 3rd party using the new/beta plugin framework. Unfortunately, I see no evidence of an existing, planned or requested plugin. This improvement suggestion is similar to AOD-3397