It may depend on the way you reheat it.If you use the microwave then it may become mushy.

You can try the oven like “pasta al forno” or “pasta pasticciata”. These recipes should spawn from the need to consume pasta leftovers.

Or, you can try to reheat using some non sticky pan with oil. Depending on how much oil you use it can become some sort of fried pasta, with some very crunchy bits. It doesn’t come to my mind any recipes based on this way of reheating but I can assure you that every Italian has tried it and someone likes it more than fresh made pasta (including my SO)

This is the way

Reheated pasta is a thing here in Italy. If I am not mistaken, there are some recipes which started as a way to use pasta leftovers.