I don’t know how much farther they can advance in technology, but the difference between your Switchback and the latest offering by Mathews bows, is outstanding. If you tried the new Phase 4, you would be amazed. It is so much better than your Switchback, you will notice it immediately.
I bought the Monster “Chill” when it first came out in 2014 and still use it today. It is still a vast improvement over your Switchback. I haven’t seen the need for me to go to the newest bow, my Chill still gets what I need done quite well.
Even if you started looking at used bows that are newer than your Switchback, you will be able to find a better bow that you will be happy with..