I don't think it's JUST speakers that determine this. It is the interface between all of the components that will ultimately determine how well the system images. IOW changes in the front end could potentially have an effect. The interface between speakers and amp could have an effect. Etc.
That said, I've found simpler designs with minimal or no crossover...single driver, and monitors, for instance, both excel at soundstaging depth. SET amps paired up with the right speakers are world-class at creating a holographic stage, but they don't serve as wide a variety of program material as well. OTL also do quite good paired up with the right speakers and are more versatile than SET. But it's not just the speakers.
That said, I've found simpler designs with minimal or no crossover...single driver, and monitors, for instance, both excel at soundstaging depth. SET amps paired up with the right speakers are world-class at creating a holographic stage, but they don't serve as wide a variety of program material as well. OTL also do quite good paired up with the right speakers and are more versatile than SET. But it's not just the speakers.