Just finished my first game with this -- went Liberty-->Aestetics-->Rationalism,Freedom. Was a blast!
ONE thing, though. After several starts ... I think that Tradition has been overly nerfed, perhaps. With +2 happiness per lux and +1 production per every non-lux, I found that Liberty was far better than Tradition would have been, even though I ended up building only three cities. When you are surrounded by bananas and a couple pastures, getting +6 production on turn 80 or so is just *huge*.
Problem with Tradition, as I was playing it, is growth. No more aqueducts and if you want to take advantage of the early specialist slots, you grow less -- and growth bonuses don't help at all if your food surplus is crap. I played as Egypt going Tall/Wonder-whoring and found that it was far easier to do with Liberty than Tradition, and that seems weird to me.
One thing that would help is make the Tradition finisher stronger. What is it now, +1 prod/gold per 5 pop? That's almost nothing when you finish it turn 80'ish or so, far less than what you get from Liberty. I might make it +1 food per specialist or somesuch (or even have +1 food per specialist earlier, so you can take advantage of those early slots).
Or ... +1 food, +1 prod per specialist, by the time it finishes ... probably still going to be less of a prod boost than you get from Liberty.
Going to try Tradition again, maybe Piety, and go Order this time around ...