Finally played a decently-long game. The bad news is I didn't get very far up the tech tree because I was locked in mortal combat with another civ until the elves got pissed and wiped us both out. The good news is that the other civ was the Scions - I was pleased they could actually hold their own.
Anyway, I thought the civ worked well.
The Militia strike me as too weak... except that the Founder is around. I had a lot of fun with the Wild Trolls and got some use out of H.N. for the Hill Giants.
I liked the Founder a lot. I thought he balanced out the Militia and was nice for limited offensive operations, too. _Maybe_ too nice. I'd like to see him pick up a "terraforming" spell or two later in the game.
I enjoyed not having adepts - I usually go for them quickly so it made a nice change of pace.
I found myself wishing for troll slave workers, just for flavor. Might be more trouble than they're worth, but maybe troll workers with high work-rates that can just clear forest, mine, and build roads? And sometimes they turn barb. You have capture them to put them back to work.
Re: Traditions: Rather than having it be a "must have" civic granting a huge #-of-cities maintenance break you might be able to get away with having the free building, or a common building, give a straight +1 or +2 (depending on the building) gold bonus. Saying it's taxes from the thralls might tie it to the background, but you'd know better than I.
"Enchantment" doesn't strike me as appropriate as a starting mana. OTOH,
1) I don't know much about the background.
and
2) I don't have anything else to suggest I think significantly better.