This will not change. All such new functionality is expected to be addressed with Active Directory in NT 5.0, or later. Active Directory is an attempt by Microsoft to incorporate a directory service within the operating system. It is currently intended to provide interfaces to foreign directory services, such as Novell NDS, and perhaps X.500 at some point. It will support an LDAP interface into the directory, but will encourage users to program to its proprietary interface in an attempt to lock users into its products.
Current plans appear to fall short of user expectations, despite the marketing hype.
This restricts the ability of customers to design a directory tree that will meet application requirements. In addition, the size of a branch of a tree is limited to 10 million objects. While this seems large on the surface, it is much smaller than it sounds. For example, if you decide to put all of your employees in one branch of the tree, and each employee has 100 attributes, then you would be limited to 100,000 entries. This is significantly limiting and forces users to design trees that are inefficient and significantly increases operational and maintenance costs.