My 2.4 are 6' from the back wall and either side wall, 8' apart, 9' to the ideal listening position, and have a smidge of toe, <10 degrees. While they're 6' to the 'real' back wall, they're 3' to 'interruptions' like an open stairwell and my stereo rack. The room is an open floor plan to other 'attached' rooms, 8' ceiling, thick pile rug. So overall very good acoustics for Thiels, with no reflective boundaries anywhere nearby.
But it does create a lumpy low bass room response below about 80Hz. Indeed, 25Hz is the same 0dB reference level as 1kHz. This was 'reinforced' when I recently bought KEF LS50 Metas, whose output drops steeply below 80Hz. So in many ways their bass is smoother in my room as the low bass is MIA and not exciting the room nodes. Luckily, a lot of music has little or no bass below 100Hz.