A larger speaker, with more drivers, will deliver superior sound reproduction relative to what is currently available assuming it is properly designed. But this kind of speaker wouldn't be for everyone. With the exception of an electrostatic design, a speaker such as this would probably need to be located at least 6 feet away from a rear wall and listeners would have to be at least 10 feet away. 7 foot ceilings may be challenged too. And then of course there is the expense factor. It would give us a good excuse to move to a larger house though \:\) .

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated