Schip, the population controls work like the graphics settings -- they cover your whole Sims 3 file instead of each individual file (I discovered this when I had fairies and werewolves showing up in my decadynasty game because I'd included them in the life states dynasty game.) As for celebrities, apparently you can't keep them from picking up a point, but if you check the box to remove your household from the celebrity system, you don't get the interminable calls from the agent.
Great update, though -- you seem to have made lemonade from your lemons!