This contest has been interesting for me. The first 10 assignments I completed were all unleash disasters / earn gold keys / upgrade zones. In all, I completed 22 assignments and cancelled 2. Of those 22, three gave me 4000 points each (earn gold keys) and 3 gave me 3000 points (unleash disasters). Other assignments were in the 1200 - 2400 range. I only did 3 produce and collect assignments, and they were overnight. I just got a lot of high point, quick assignments.
I got to first place relatively early with 42210 points, though I might not stay there. It's the town league, my first shot at platinum keys. Since I'm at level 23, it's all just fun stuff. Mostly I'll be glad to get the simoleons, but the royal garden is pretty nice looking. If I ever get to build an airport and have Parisian / London neighborhoods, those gardens will look nice.