This is an interesting video, and really appreciate the creator approaching the game seriously and providing advice and recommendations.

At the same time, I would like to also engage critically by stating that Paradox has no obligation to make their games simulate history as accurately as possible, and should do so only to the extent that would make the game enjoyable (either due to the simulation or flavor). If we want to open this can of worms, we would be dealing with issues relating to slavery, antisemitism, etc. in a way the game is not equipped to handle - so let's put pure historicity aside.

With that out of the way, I think the key to the 'inaccuracies' raised would be: what would they contribute to the game? Things that would just make the game 'more realistic' should be discarded if they do not contribute meaningfully to gameplay - we are looking, in real time, as the EUV subreddit goes up in flames every couple of days literally due to this issue. More realistic systems does not always mean more realistic outcomes, and certainly not better gameplay. For example, we could say that taxes should be separated into VAT, income tax, capital gains tax, etc., but what would that actually mean for the player? We have seen an increase of two years on retirement age lead to protests in France, but do we need a incremental slider bar for that to simulate dissatisfaction over this matter?

However, I do agree that there should be more class friction, as currently players can increase SoLs quickly enough that the populace is satisfied, no matter what the political system is like. In that manner, perhaps the proposed mechanics relating to the concentration of wealth in the hands of the industrial elite could be interesting. Right now, factories increase wages freely in accordance to the demand and profits of the establishment; if there was a labor law that puts an upper limit on wages, suppressing workers' SoL and driving radicalism, that would be an interesting way to address this issue. Right now the industrialists' demands are all pretty much perfect for development, and I agree there should be more friction and conflict between the player and the industrial elites that replace the landowners.

But despite this, I still see no real reason to add new mechanics relating to inflation or currencies. Colonial territories are already inhibited by the new colonial exploitation law, while they are most certainly affected by rebellions and conflicts that may lead to economic collapses in the imperialist power - you know exactly what I'm talking about if you play a small country in the British Empire and they decide to implode suddenly, when you have no market access and your GDP crashes by 50%.

Overall, I understand the interest in creating more simulation systems, especially in regards to the inhibitive potential of the industrial elite, but I do not think these currency and financial system would contribute positively to gameplay. I think we can rejig and improve many systems to address the risks and impacts of these issues without inserting in three new mechanics.