Yeah, it seems at a certain breaking point in the difficulty curve it becomes “catch up with the AI boni”, which made it a completely different game for me. And as you said, usually by renaissance you know if this is going to be a landslide victory (which at that point becomes a chore), or if you’re screwed.
The permit requirement does not apply to kitchen knives, does it? Been some time, but I travelled to Tokio quite frequently for work, and always made it a point to go to kappabashi and get a nice cooking knife, some of the longer than 20 cm.