What do u think of T9?

hallo Sones out there^^... I'm really getting confused now because Diamonds (Tara's fans) start calling them T9 instead of T7. Yup, that's right... Tara will have two meer members... and this is actually making them another nine-member group. Which I honestly don't like. S9 is unique and I'd rather have S9 as the only group. T.T However, I still believe in the power of nine, and I'm sure that S9 is the best <3. Soshi jjang ~~~
So, what do u think? Like of Dislike? Why? Let your opinions be heard S-ones!!!