The temperature does cycle on and off usually based on a thermometer, so it does hold the selected temperature. I don't get why that's a drawback for you? The cooktop will literally be kept to your selected temperature.

Also the induction cooktops I know use the same kind of glass or ceramic plate on top, so you have the same advantages/disadvantages in regards to scratching, cleaning and breaking it.

I have used induction a couple of times when cooking at my parents house and in a friends kitchen and I happily stay with my ceramic cooktop. Induction is much quicker and more energy efficient, but I just like that I literally control the heat on a fixed size cookfield rather than controlling the strength of the current, where effective heat will depend on the size of the pan.