It'll give a false sense of spaciousness along with changing frequency response as you move about the room. There'll be reenforcement and cancellation from one foot to the next at various frequencies. Not a problem with atmos info because it's not direct, across-the-board duplication of sound like if you merely paralleled the two-channel signal. If you've got the cash and plan to go atmos at some point, go ahead now, otherwise I wouldn't (in any event 'cause I don't give a hoot about "home theater").
Bose (in)famously splashes sound around. Some folks dig it.