Guys, this series is pretty old, but still - one of the best series with Sonic I've ever played! Along with Final Fantasy Sonic X and Sonic.EXE - these games are pretty much my childhood and I'm really happy that I discovered these amazing games / serieses back then so I can still enjoy their progression even today! yey! :D
Anyway, I'm really happy that you still keep working on it , I really can't wait to see the EPIC ending of this legendary series :)
Now.. talking about this game.. well, first of all I really loved that you made a movie and also a game! XD Hope you will do that with episode 10 too! :)
OK... so, the new battle system in this one looks nice, but it's not really used to it's full potential, I mean the battle is pretty repetitive or even boring at some points and like @Lilut said, the formation team thing is kind of... useless.. BUT, you're progressing and you try new things so that's very good ^-^ but, if you want... you can try to go back to the classic RPG style but.. I don't know, add some cool things about it, like in episode 8, where you needed to press on buttons, to form a combination or things like that, those things are very cool because they give the game a more.. dynamic effect u know :D
So... to sum up things.. I wish you all the good and imagination to make a next GREAT movie / game
Cheers m8!