Box, you are correct that "bloc"ing helps to achieve some functionality.
The unfortunate side effect of this still remains that the game engine does not "play nice" and follow what the rules as to what you expect them to do.
You spend hours and hours creating a pacific war scenario and then you cant get Japan to attack Pearl Harbor no matter what you do.
You want to replay the Battle of the Bulge and instead the Germans make peace with Russia and include an MPP in the deal.
Utimately the problem with responsive AI and any preconceived historic campaigns of battles is that the Civ3 AI looks at the situation and decides to make moves based on its assessment of the military situation and the terrain available. The civ3 AI does not look at terrain the way the Japanese may have or the way the Germans may have or even the way Saddam Hussein does today.
As discussed in the other thread on world maps, a major element of the game process is the discovery of terrain, the discovery of your neighbors, the discovery of technology, and the discovery and control of resources. When you begin any game that eliminates one or more of these elements of risk, then ultimately you will have a less challenging and less dimensional gaming experience.
Enjoy the fixed focus maps but recognize how the game plays as well.