center channel idea, what do you think?

Hello all,

I am in the plan phases of building a 3.1 system to double as HT and music enjoyment. I had an idea about the center. After some research i have found that the horizontal center speaker has some flaws due to the way the speakers are placed side by side. There have been some designs to fix this issue that off set the speakers in the box and even the addition of some (very expensive) 3 way options. my question is why have i not seen and single (or even 2 driver) full range center speakers. When thinking of a movie the center plays a very important roll, ie. vocals. as i understand it most 2 way systems run their crossover points around 2khz and from what i have read it seems like that is in the prime range for the type of effects this speaker would be used for. with a full range single driver there would be no need for a crossover and any blending of range. This seems like it would/could provide a very enjoyable listening experience. Is there important information i am missing or does it seem like this idea has merit?

I posted this question in audio theory as well, i case anyone else would like to read Kal's response.