In a normally operating 200 4-r trans the failure point is the direct clutches. Because of the minimal clutch capacity and fluid path it will fail first. If you're burning bands youre probably cavatating the pump or had some other issue with the setup. There are transmission out there with hundreds of 2-3 shifts at 800+hp. They can last but not ideal for 9 sec or more power. Porsches4lunch mentioned the stator. That's not a transmission failure point. It's part of the Torque converter.