Thank you so much for giving me hope for Rock. Whatever characters you are expecting/wishing, I hope you get all of them.Season 3 for Rock. Viola probably not until SC7. Didn't Amy get more viola moves in season 2? Project Soul has also demonstrated that they put their full effort into guest characters as they are completely unique.
Groh has moves from Pattycakes, and Azwel has moves from Spawn and Link.
Haohmaru taking so long further kills the delusional idea that a newcomer is coming in Season 2. You need not worry, The Lesbian Barbarian will not replace Rock!