RFZ came into vogue, then something tells me an RFZ is actually...a DEAD FRONT END...right?
Reflections at the Listening Position can be very effectively eliminated by angling the side walls. Some even use hard clouds. These reflections are directed towards the back of the room where they can be absorbed or diffused and returned to the LP.
It might be worth noting here that the Front End of a FTB room is also lively.