4x idea - inspired by 6 - current government type modifies some research rates

[DeckerdJames]

By some research rates, I mean, that if you are a communist government, then you learn communist compatible civics and techs faster, and incompatible ones are learned slower. Others might be neutral. I can imagine that each node in the advancement trees could have coloring that is correlated to any government type that adds a boost to the research rate of that node or the node can be correlated to the government type in some other way that is apparent on the node (like a symbol or icon on the node title bar) so that the player can develop a strategy based on which nodes are correlated to which government. Further, perhaps when you pick a government type, the nodes that can be researched faster are outlined in some nice glittery, sparkly effect on the outline of any affected nodes. Positive effects for nodes that can be researched faster and negative effects for those that are researched slower.