Seeking opinions using 2 full range spkr as centr

I posted a thread regarding the use of a full range speaker as dedicated center. Then I did some more research and ran into the possible thought of using 2 full range speakers as dedicated centers. I can hang these two below my plasma. I was going to use these two for a 7.2 setup. However, there are no 7.2 format. I wonder if I can get better image of sound stage during a DVD-A or concert DVD playback. Has any one ever tried or even thought about it? If so, would I use some Y splitter to split from each red/black binding post into two for the two centers? I hope the wife approves about hanginng two full centers beneath the 42" plasma. It probably will look ugly. I can envision it already. However, the thought about better sound stage image like those from Martin Logan kills me.