We can never say for sure which functions will 100% be built into Carly apps in the future.
However, we have our eyes on manufacturer level Porsche diagnostics (reading out every single ECUs faults in your car) and maybe other functions that give you more control and insight over your Porsche.
Whether these functions will ever be built in, we cannot say. This depends on how hard the development is (which we almost always manage to handle) and how high the demand for special functions is.
Please tell us at email@example.com if you want to support the development :).