Seeing as this is picked up by JC Staff, much to my dismay which I hope can be dispelled when the first episode airs, I would think they might reunite Kugimiya with Kawasumi Ayako for a 3rd series with Kawasumi doing Minori.
Though Hino Satoshi certainly does not give that "timid guy with an intimidating face" feel of Ryuji, so there goes the Shana/ZnT reunion. I would have either Sugita Tomokazu (Kyon) or Nakamura Yuuichi (Tomoya from Clannad) do him if I were to do the casting, but they would still be too "cool" for Ryuji.
Funny too I was thinking of Kuwatani Natsuko initially doing Ami, because of her, well, personality. Read the goddamn novel and find out why. Kuwatani did Asakura Ryoko, that's as much hint as I'll reveal why I'd prefer her doing Ami.