For what I could catch from the 'Next Tales of' live, Hideo-san talked about ToZ designers including Inomata (Destiny), Linear Motion Battle System on PS3, Tales of Festival and the voice actors of Slay and Alicia, supposed to be the names of the main protagonists~
http://tinypic.com/view.php?pic=6nw611&s=5#.UqmnedJDvLJ