We're definitely considering that, but we don't want to be just another enterprise LDAP vendor. What would be the unique selling point, in that case? Elasticity?

The Platform as a Service angle is very interesting, and we're planning to release an addon for the major platforms such as Heroku, GAE, OpenShift, and CloudStack. CloudStack is already setting a precedent with their new LDAP authentication functionality. We'll see if it catches on.