Speaking of the new cast, it seems Aya Hirano will join the crew as Menchi. Along with Masaya Matsukaze as "Gittarackur".
Source:
http://www.animenewsnetwork.com/inte...sukaze-to-cast
Both sound like good picks to me. Plus I think the latter is criminally underexposed so it's nice to see him landing a decently prominent role.