If the crisis' weren't balanced to the new economy: that's the issue, not alloy production specifically. The Khan specifically is already a bullshit event because it spawns a dozen fleets it can't build or afford, and becomes the most technologically advanced Empire over night. It used to be "acceptable" because the alternative would be it had no teeth. Now there's a dozen ways to wreck an economy, and people are so wrapped up in their empire's affairs maintaining a massive fleet hardly seems the best use for your materials.
The game is no longer entirely about war and good riddance. Diplomacy wasn't even the focus of the patch, and yet it has seen a huge spike in desirability due to the damn economy. If it's unreasonable, the mid-game crisis should be changed. But, still, there's also a good reason to submit to the Khan now, there's a high probability you'll stand no chance if you haven't been building a war economy.
I found that diplomacy is of no concern any more. The AI is so incompetent that soon I can just walk over them. But I think the crises seems more balanced now. They can be terrifying. To bad making alliances counbt for nothing.