Great article! I've always been a builder type, but your system is much more efficient than mine... I always end up w/ several marginal cities to fill in all the unused spaces. Lately I've been playing Monarch level, and I find it's better to build lots of cities close together to win. Too bad -- I miss those highly efficient big cities!
On Regent level or lower I build all cities in a 4-over, 1-up or down pattern, but since I love the Harbor/Offshore Platform combo I make adjustments to maximize the number of coastal cities.
How do you integrate conquered cities into your Empire? Do you raze the ones that don't fit, or just live with your rival's poor placement choices?