There are enhancements but mostly for security. What is new that is floating your boat SD ?
just the look/feel. keep in mind, that i'm not an IT guy and i don't come from it where you do.
your assesment is prolly more valid.
as for me, since i only admin 2 boxes (mine + 1 customer -- iis6), i like playin with iis7 on mine
i don't even have to deal with AD.. LDAP is far as it goes..