Well , if the game was still alive today by the Original Dev's , with no doubt there would be at least 1 new form for each race, cause u know advertisement and money grab, but since this client is not money grab related, that might be true , but still story wise, look at it this way : if tmq keeps going , u are not going to defeat Cell , or BUU as a normal ssj. or a giant namek , even for pure majin it needs the other forms like buff majin , and evil one, TMQ was the path for CAC's to either get a new form or not, sadly game died before that so we got stuck with basic forms, now why did majins get kid buu & not other forms? i think that's the Question you should ask your self.