"Would an open baffle design like the X-Statik be suitable in this situation? " This is almost exactly describes the room in which I have a pair of X-Statics installed. The answer is yes, they work quite well in the right configuration. I had originally placed them at the end of the long side of the L, but discovered that putting them in the corner of the L worked much better. My room has a door at the corner of the L, so I can remove a bit of corner loading, but even when closed, the imaging and spaciousness is better than the previous arrangement. It should work well for you.