Remember that some states that license communities sometimes grandfather existing homes on setbacks from the road and distance between homes, but if you pull the grandfathered home they expect you to follow current standards if you place a newer or new home. This is also very often true in major metro areas that have home rule over communities.
Everybody has opinions on what works, and that often changes with the locations. I like every replacement home to be 16 foot wide in 3 star communities, but in some communities they are as small as 16’x50’ - one bedroom with front porch. Everyone has different marketing strengths and weaknesses, and I know mine.