Re: So, where's the news?
"Actually, you're quite wrong. "Sites" are more than just a useful means to mentally break up domain controllers. They are used by other applications that hang off AD to determine network topology for their replication,"
Microsoft says a site is a set of well connected (LAN speeds or greater) IP subnets. That can easily be your entire organisation these days...
"to determine how to break up the load on the AD servers (latency matters!) and more."
No, sites are not for that. Active Directory already has load balancing techniques built into it. Also Netlogon contains load balancing features that will automatically exclude logging onto to slower to respond (potentially overloaded) DCs.
"putting everything in a single site doesn't solve the problem of needing different propagation times for different classes of object, which is ultimately what is required."
That's never required in AD, and the entire design of AD is to avoid such differentiation.