Phil is nice but the problem is the +100% great person generation doesn't multiply with pacifism or national epic, it just adds. due to the diminishing returns of GP points, you're probably only getting one extra bulb out of the philo trait, or maybe two if you really leverage it, at least until the industrial era. Its great if you go for oxford though, universities are so expensive if not philo. I pretty much never build oxford if not philosophical--i mean, 1200 hammers in just universities is pretty freaking expensive.
industrious is OK. For quick early wonder strategies its about equal in strength to imperialistic. I wouldn't call it general use though, since if you don't go for wonders or early metal casing, its only benefit is the fail gold which is nice but not good enough to be worth a trait.
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Off topic, but what do you guys think are the best traits? i saw a thread on it but it was really old.
My personal opinion:
Tier 1: Imperialistic, Financial.
Tier 2: Creative, Organized, Philosophical, Industrious, Expansive, Spiritual
Tier 3: Aggressive, Charismatic, Protective.