You know what would really help grow interest of potential VAs for this?
If you give a rough idea of what kind of voice is needed for a role. In some cases it is pretty obvious ( Barret, Aerith, Yuffie ) in others it's pretty much free guess ( Tifa, Vincent, Cat Sith, Red 13, Reno, Rufus, Hojo )
Sure, people could try to orient themselves on the AC voices but eh..