Chris Dickens wrote:
> Whatever direction you go, please select one where internal interfaces
> behind NAT can access other systems that are also behind NAT on a different
> interface.  This continues to cause me lots of manual labor.

Technically seen this is always possible since NAT is a 1-to-1 IP 
translation...
You are talking about PAT or P-NAT.
Well, communications over a double PAT sounds for me like IP over ICMP 
and RCP over HTTP and other similar "way to let the world turn in the 
other sense"