Re: In remission?
Not the other way round though
My exact point. Your preliminary condition for interoperability is to throw out everything and put your network 100% under Windows control the windows way or the highway.
That proposition would have had some extremely dubious merit if Microsoft was properly investing into the full compatibility suite for Windows including emulating and mapping to/from NIS, providing NFS to SMB mapping, etc and was honest about it. That never happened - these were always second fiddle, crippled and with one or more caveats deliberately designed to push people from their existing platforms onto Windows.
As a result most people stay away from it. ALL large organizations I know with mixed environments do not use the compatibility services at all. They export AD instead and build NIS maps and various password backends using custom scripting or 3rd party products. The only place where the Microsoft compatibility tools and Kerberos "The Microsoft Way" on Unix/Linux are in use are clueless medium enterprises. Usually not for long too - people get fed up with the limitations and give up.