Thanks, MK, glad you found it a worthwhile read. The "feeling" of the Paths (that snarky, elven-supremacist mystery cult feeling, specifically) was exactly what I was going for, partly because I didn't actually play 2E and would've had a miserable time trying to convert stats.

I didn't know about the Dagda/Morrigan connection to the Order of the Sun, Moon, and Stars either.
As for the Bright Shining Ones/Passions connection, I'm not certain, but I'd lean towards no.
TnN had this to say about it: "'Ascending to the cities' refers to the uniting of Mind with Spirit, free from the shackles of the physical world. The Ascended spirit no longer incarnates, becoming instead a Bright Shining Spirit and remaining in the metaplanes." Even the
Tuatha Dé Danaan don't quite fulfill the role of a Passion analogue/successor as far as the Path of the Wheel goes, since it's my understanding that they're elven souls reincarnating through the Cycle. Of course, you could always just ignore that and go back to their RL mythological basis, then justify it as "humans thought they were the Gaelic gods, but they're
actually the Passions". YMMV.
Oh, hey, random thought: I personally would be wary of core, non-magical skills having Karma discounts as a result of following a specific magical belief system, just on balance principles. (It might not be an issue in your game, and if not, enjoy!) But, how about some
Way of the Adept-style discounts on PP costs for powers that apply to the Path core skills? You could even do some quick-and-dirty mapping of existing Ways to the different Paths: Warrior's Way for the Order of Cu Chulainn, Speaker's Way for the Order of Etain (that whole "clear thinking"/persuasiveness thing), Artist's Way for the Order of Brigid, Magician's Way for the Order of Ogma, and... blah, the Order of the Sun, Moon, and Stars is being difficult again. I'm sure you see what I'm going for, though, and the adept bonuses might make a good companion to the "patron"/simulated mentor spirit bonuses for the magicians in each Path.