Why do you want something that makes it look like Windows?
To me, Windows has always been needlessly complex. Why would you want Unix to be the same? The beauty of everything being a file, is that there is only one way to edit settings for everything. This makes version control very easy as you can just copy the old file and save it somewhere with a date. You need to roll back, no problem... To learn how to change settings all you need to know how to do is edit files and usually restart or HUP a service, with Windows you need to know how to change files, edit registry keys, run commands and sometimes I am pretty sure you can only do things by sitting at the machine itself. Then there is the registy hell. Find the key that controls what items are started when the system boots.. Oh. that is in HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\, that makes a lot of sense, I would have looked there. With Unix if I don't know where something is, I can usually do a find on the filesystem.
All that is really needed is something that keeps the files the same on every system in an automated fashion. Something like Redhat Network/Spacewalk works well. Someone mentioned puppet. It isn't like Group Policy, but it can do so much more and it really is no different then just editing files from the local console, but now on a global level. The beauty of Unix is that the inner workings are simple (at the expense sometimes of the outer layer), last thing I want is some abstraction layer that I no longer understand.