I am testing your suite and I must say I am pretty impressed, mainly with how you manage to build it with several sensors and one place where to keep the data with out using direct SQL from the sensors to the server (with the risk of loosing data if there is network connectivity issue).
So, to start with, good job!
But I have seen one missing feature that I believe there is a need for in bigger environments is the cases when you are not one or a couple of guys using the GUI's is to have central authentication and authorization.
So basically ldap (or even kerberos) for the authentication and ldap for the authorization.
One simple way to achieve this is to disable the different login parts in the different open source projects and rely on apache fixing the authentication. You can also have apache to put in headers of the authenticated username for eg when you write notes to use the username for traceability of who did write the note and such.
Would this be possible? I will also check if I can get some fundings for this if