I've just started using artillery more now. I found myself breaking my cavalry repeatedly against fortified musketmen, so in my last game I built up 20 artillery. All of a sudden, I'd take a town and have no casualties. It takes some planning, but if you steal plans, and use artillery with cavalry, you can take the last 6-8 cities in a neighboring civ with no losses. I like using non-lethal bombardment for fun, but i am glad that they added the option to make it lethal for those who like to play that way. I just think it would make it too easy. My strategy is to build a fortress on a hill, or to build a city on the border of a neighbor, and to load up the artillery in my territory. With a pile of workers sitting nearby, I'll take a city, build out railroads, and move the artillery within two squares of the next city. Since the plans show exactly what is in each city, I'm able to plan the entire sequence before declaring war. So now, instead of having wounded cavalry laying around, and losing a bunch, so that I can only take one or two cities and then be in a weak defensive position, I can take those last 4-5 cities also and still defend the ones I don't disband.