Since you ask :-)
First, that is a really nice looking set of speakers!
Second, I suspect that you would greatly improve your sound stage IF you could shift all of the stuff, especially the speakers, 2 to3 feet further into the room and hang some heavy cloth panels on the windows. You could keep the shears and drapes on separate rods keeping the drapes open framing the windows except for those times you are listening critically. But I realize we all have problems and ideal set ups are not always possible. :-)