You have no power to choose the features you're assigned to implement. The most, then, for which you may reasonably be held responsible, even by yourself, is that you implement a bad idea in a good way. From the sound of it, you've got a lot of practice at that, and you've made it a habit. That being so, you have nothing for which to reproach yourself. Cultivate detachment, and relieve yourself of the need to try to take on more responsibility than your authority can support. This will free you to concentrate on what you can control, i.e., the quality of your implementation.

And, if you can't change jobs, then consider coming up with a side project. It doesn't have to be commercial, or even of particularly general application; even if you're just scratching an itch of your own, it'll give you scope to exercise the agency whose absence in your day job is giving you fits.