there alot to read, and I doubt you'll ever see this... but I discovered how much a pain it is later in game when you constantly decided to switch civs back in forth, like I do, for unique circomstances. Always going on revolt IS ANNOYING. So I start by looking for a leader with SPI spiritual aspect, she has no ANARCHY of kingdom when switching civics or religions. That narrows it down to 4-5, than you look at the other traits, decide which one you prefer. Right now, I'm playing as Salladin, or however it spelled. Asside from SPI, he also PRO protective. early game, all archers start with city defense. later, all riflemen have drill. IF i save those archers that are building unmatchable defensive experience, and upgrade them to hit Riflemen, adding drill, WOW.
So thats my opinion.
OH, btw... starting out, race for more than just one religion and be the first to discover it. When you are founder of a religion, one of your cities is its holy city. get a profit, build that special wonder for that religion in its holy city. Every city across the globe that that religion spread to, gains that holy city +1 more gold. It does not limit to your national religion or not. In my current game, I'm found of Hindu, Confusion, and Christain, and about to get Islam. So, after I establish ea holy city, get its Holy wonder built, and spread it globally, EA religion will give me +1 gold, and cities can include ALL seven religions, they are not limited to one. Chance decrease for each new religion to convert a city, but there not limited. So there potential for me bringing in +4 gold for every city across globe if I find this Islam. NOT TO MENTION the cultural improvement itl bring.