If you've purchased a half decent toilet you should have a product that can last a lifetime. However some of the supporting components such as seats, handles and fittings may need renewing at some point.
With enough daily use the hinges on standard seats are one of the first things to start to show signs of wear and begin to wobble. The seat can even slip off if left for too long. Consider replacing with a soft close toilet seat upgrade, these are hygienic, prevent slamming and come in standard, d-shape as well as square designs.
If you want to add period detailing then consider our traditional real ceramic toilet cistern lever. This can give new life to a tired looking cistern