[viridian]

Liberty is good too, although it's more civ dependent, and is basically a "win more" button for civs like Russia who can manage to get an aggressive start. Honor is also useful as a "I'm right next door to Mongolia and Arabia and I'd like the have a slim chance of actually being allowed to play". Other than that you are mostly right of course, the default choice is definitely trad, and piety is unusable. I'd say given a random civ you are probably going to go trad/lib/hon/pie 75/20/5/0 percent of the time.