A question on design and imaging.

[JayH3]

In my daydreaming of speaker designs I thought of one idea where each channel was basically one mtm stacked on another but focused maybe 15* from each other. The idea was that this would create a wider sweet spot.

Then I thought deeper about this. Would this design create less accurate imaging? I would imagine it would create a greater sense of ambience from more room reflections.

Anybody have any tips or links for designing for proper imaging and speakers that seem to disappear in a room?