Well, I can't argue with the point about Drama and Turtle's subplots being pretty shallow. They seem to be trying to do a role reversal on Drama and Vince, with Drama being the big cheese and Vince being the broke sibling, but it hasn't really come off that well. It was funny when Drama was the broke sibling because he actually resented it; Vince is still too cool with everything to make the role reversal work.
For the rest, however, it's kind of unrealistic to expect the whole group to be doing things together all the time. But even if they were together all the time, it'd just lead to different annoying flaws, like Turtle and Drama once again being reduced to useless hangers-on while Vince, E, and Ari are doing stuff with Vince's movies. All I ever remember Drama and Turtle doing in Ari's office is sitting on his lobby's couch and reading magazines. Not exactly great television.
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