UPDATE. Have some good news regarding my issues. Finally had a Toyota rep take care of me a little. The dealership had a brand new 2016 transmission put into my 2015 model. Apart from them leaving my car out of alignment (go figure), the drive is 210% better. I'm still researching to find out if there were any new updates to the 2016 transmission. I haven't been able to find anything. The shifts are smooth and clean. It's WAYYYY more quiet and I don't have any cabin noise when the windows are up (besides in first gear). I am extremely satisfied with how my car feels right now. Now.. that being said, I am going to use the next two months to see if the issues end up coming back. It is new, and it hasnt been broken in yet. So we will see. For now, the car drives better than it did the day I drove it off the lot in St. Louis. If anyone has any updates as to the difference in the 2015 and 2016 standard transmissions for the tCs please update. I'm very interested to know.