(...)
Regarding your point about German dissatisfaction, perhaps losing a war should trigger a large loss of support for the current ruling party and perhaps the government type as well.
Maybe there'll be a feature for things like these (internal consequences of losing international status): as it was said in IGN's preview of Victoria2,
If you are perceived to be one of the top eight countries in the world, you're able to influence additional countries to do your will, you also appease your citizens at the same time, filling them with a sense of national pride. However, falling out of this specialized club can lead to political and economic unrest as your citizenry chooses to disregard your policies or move from your country to a better land.
We don't know how that 'national pride' will work, but good for including a game mechanic to handle partially the imperialist/nationalist and even romantic forces in the era...
In general terms, Vicky2 should be as liberal/socialist/conservative-romantic biased as it was actually this era. Vicky2 will be great if it achieves to get succesfully these three 'sprit du temps' in global game experience (social issues, economy, diplomacy...).