My take on the changes is this:
By reducing brimstone it’s making this particular resource more scarce and needed to be farmed more frequently leading to either conflict at the brimstone locations, or the chance of it already having been farmed.
This basically bottlenecks dragonpowder and steel production which in theory should reduce how much dp is being produced, but should also limit ALL forms of gigantic spammy t3 bases, for even the easier to obtain black ice still needs steel reinforcements.
I wasnt sure why DP had been reduced to 25 steelfire (with a t4 alchemist) but now its been returned to 100 it makes more sense.
I think dp was far too easy to farm up in ridiculous quantities - the brimstone reduction is a step in the right direction.
Now if they can do something about the vault spam…