a 2" full range can make your staging more "presented" at your sitting height with it's ability to produce lower frequency than a common tweeter. But there's also a considerations on oem power source.

A good full range speaker will need minimum 30W to 60W even it's a 2" driver.

If you were to only upgrade to the 2" full range driver with pnp install, you are gonna messed with your midbass which will be producing the same range of frequency with the 2". so ended up, "minor upgrade".

A proper 2" upgrade will included a low pass filter for the mid bass, on door mostly.

This will seperated the diff freq needed for each driver and it make the sounds proper.