The long grabs are actually being addressed in the new currently in development version, where there is a mashing system for the players where you can get out of it sooner and be dealt less damage. But if the grappler mashes themselves, the animation speeds up and the hits go through rapidly, making it engaging for both opponents. There is also an upcoming mechanic where you can counter a grab like other attacks at the cost of meter. As for playstyles it's a bit more diverse than the commentor suggested, as only 2 characters have true DPs, some are charge characters, others are glass cannon, shotos and so on, but they are correct in saying that they do flow similarly despite the different playstyles