Just because you can, doesn't mean you should. "Better" is subjective anyway. Any change with make some people mad, and no change will make others mad. If your product is stable, that's about the best you can hope for. No need to keep tweaking it out of boredom.

Seriously can you think of any tech product that doesn't get new features every couple years?

stable !== static

Its like a car, you don't keep pressing the accelerator further and further to travel down the road. You find the optimum location to maintain a safe speed. If something changes, like the road turns, you adjust the accelerator until you are once again safe. If you stayed static, you'd probably fly into a ditch. If you are unnecessarily pumping the pedal, your speed would oscillate unpredictably, and any number of consequences would occur.