Obviously, they don't follow traditional idol standards all that much, but they still do stuff like concerts and original songs, even with some of the Westerners like Kiara and Mori. Personally, I think it's the main thing that puts them above the Nijis. It gives them some form of "goal" to work towards, and gives them all a reason to collab together and help each other out, rather than just being a bunch of scattered streamers that leave smaller fish to suffocate.