In my fifty years of pursuing the high end, no. In general, you want the two speakers to integrate the sound. Reflections from the wall and floor create slightly different arrival times confusing the sound. Anything that causes multiple arrival times of the same sound can be really detrimental.
I have never experienced good sound in rooms with uncovered floors or glass behind them. Planar speakers can be helped with some reflectivity behind, but not glass, maybe painted walls… not sure of why.