While I agree that it is difficult and expensive to make buildings to scale with the 6-wide vehicles, i totally disagree that we should go back to 4-wide, as you cannot possibly get that much detail in. There is a way to make buildings to scale.Customize it to fit your needs! TLG shouldn't do all the work for you, it takes the fun out of building and playing with lego! Lego does their best to make city buildings as realistic as possible while keeping them in a normal price range. No 5 year old is going to spend $299.99 on a garage. Chances are the kid may not even build it the right way and customize it, or for a TFOL and AFOL they probably have enough bricks to complete it the way they want it.
All lego does is give you the basis, you can make it however you want.