Something new I learned today is that trade agreements between nodes are affected by the
culture/race of those nodes. It's not only node type and buildings and biome and such.
Go to
around 43:17 of this video:
https://youtu.be/QRETPXuUEJs?t=2597
.. and the abilities and accessibilities of the citizens within those nodes, to certain items and/or crafting materials, or crafting times or blueprints that you might have, or available quests or rewards, all of those get influenced by the types of trade agreements that you have, the culture of the other node that you have the trade agreement with,...
As far as we currently know, once a node reaches Metropolis the node culture is locked into place. In a sense the same is true for all lvl 5 vassal nodes under the Metropolis, and so forth down the vassal chain, until the Metropolis or parent node is destroyed.
The upside to this static system is that trade agreement are more stable. You know what you are getting in the future, and only a successful node siege can change that, assuming both mayors want to keep the trade agreement. The downside is also that it is static and a bit boring, and I believe less healthy for the longevity of the game.
Personally I would like to see dynamic changes to the culture/race of a node, coinciding with the monthly mayoral changes. Just like when a node levels up, I would like to see the node culture change depending on which race has provided the most XP during that month.
The upside to this is a much more dynamic and living world, and one where the racial composition of one node suddenly becomes a point of concern for other nodes, creating more tension points and options for node politics, which I think is a good thing. It opens up for new benefits, instead of everything being so locked in place.
One issue that needs to be solved is in-node player housing. I think the system right now is that the architecture of the player houses change with the node culture when it levels up, without the players having a direct say in the matter. I don't like that system. I think at each stage of advancement, the players should get to choose to stick with the old style, or change to whatever new style the node changes to. I care much less about the overall aesthetic of a node than I do about player choice and agency in this matter.
In the same vein, if Intrepid implements dynamically changing node architecture and culture every month, I think players should be able to keep their current architectural style of in-node housing, or change to the new one as they see fit.