I am not really sure how to answer since I have a 2019 that does not shudder. Yours is ~9 years old now, do you like it so far? Is there anything in the newer model that you wish you had? If you need to replace the TC, can you do it yourself or would you take to a shop? I just saw another post where someone R&Rd his TC, maybe you can reach out to him and find out the pros and cons.
I normally fix my own stuff, but I think I may lean toward trading the car if I had transmission problems that were severe enough to strand the car. I only have one car now, so cannot leave it in pieces in the garage while I attempt to fix it. I would consider it real hard though because those new ones are expensive.
-RandyMan