The usual strategy of looking at last year's Nats winners and updating the deck to include cards from the new set doesn't work quite so well this year. Samuel (RoA) is one of the 3.5 cards in the entire history of the game to be banned (the other two and a half being PoC's Mourn and Weep and the Originals Lost Souls, both 2- and 3-Liner), which has defanged Throne of David decks considerably (but not completely!). The first place deck was a Choose the Blocker offense, second place Priests, and third, fourth, and fifth were all Flood.
I haven't played as much as I'd like with the new set, so I'll let others go into detail, but blue, purple, white, gold, and red got a lot of support this year (especially red). I think that Ruth decks can be very scary (although perhaps more in T2 than T1), and generic Line decks that use the best cards from each theme could be very powerful. Otherwise, both Flood and patriarchs decks benefit from the blue stuff, kings have some powerful new options (and enough playable heroes to actually make a decent deck that meets Zion's unity), and postexilics.... exist. I really want them to be good but I don't really see it.
Honestly, though, there's a new soul that negates OT characters in battle. Since the last three sets (and therefore all the shiny new toys) have been primarily OT, running that in an RoJ era deck with primarily or entirely NT characters wouldn't be bad.
