Please elaborate more on GTB, what do you mean?
Well they just arent a cohesive group in anyway. They dont have the same experience that a traditional group does and also the musical direction just isnt something that be commercially successful. These songs and them releasing music as a “supergroup” is okay, but they should brand the singles in less serious manners until one of the sounds sticks and then they can begin to make more serious moves with that music.
I would say that SM Station was kind of created so that SM Artists had a way of making music in a more… free? Way, and SM was willing to fund it because it was low buy in and it allowed them to feel for the right sound for each person/sub-groups, even to see how SNSD was being received after their string of scandals post jessica/tiffany japan.