I like that you've expanded on the number of nations in RISK, but the game needs to have options to speed up comp opponents. War of attrition on level 3 and beyond is just too slow to remain fun.
Excuse me if this was posted by someone else previously, I didn't see it though.
I think that the strategy of giving out bad pizzas late in the game may be backfiring. I'm not completely positive on this, but once I unlocked the first 35 customers it was very rare for me to see a customer more than once per rank. This may also generalize when you get past a given customers rank as well.
 "Sensou"){kind=icon}
 "Dolphin Olympics 2"){kind=icon}
 "Papa's Pizzeria"){kind=icon}