WAF is avoiding the wrath of your wife, to avoid this: - "If you place those honking great speakers there, and the two boxes over by the couch, you had better find another place to live".
It is a genuine problem, and they have a point. Most of the installations we crave, really are in effect quite ugly. Modern gear just is not designed with aesthetics as a priority, and that is all of it.
I'm old enough to remember a time, when it was. It was the rush to all this Far Eastern manufacture that sent WAF to the basement.
Most manufacturers made electronics that could be panel mounted in beautiful furniture, with power amps totally out of site. Most speakers have always been a problem to greater or lesser degree.
The biggest factor is that all homes are different, and so customization is required in most situations which is getting increasingly difficult.
Unfortunately the restrictions imposed by multichannel speaker placement have exacerbated this problem to new heights.
If possible a room dedicated to AV multichannel is a huge advantage. I realize that this is not possible for many. I remain convinced that unsuitable rooms would be far better off with 2.1 or 3.1 systems. My two non dedicated rooms, with a 2.1 and 3.1 really do perform very well. Trying to shoe in multichannel in either of those spaces I can be certain would be a massive downgrade. People who pursue this hobby reallly need to believe that less is so often more in this hobby.
Lastly getting buy in from ones wife, is vital. If you have the fortune of a dedicated room, unless it is a cluttered mess you wife will enjoy it, especially if is a space family and friends can enjoy.
If you do it right you wife will get used to good sound, and after visiting friends homes, will say, thinks like I could not put up with that sound.
If you wife gives you an order for a system and her aesthetic requirements, if you have the skill, build her a system of her dreams. Make this an excuse to use your design skills and constructional chops.
This system was designed under direct orders from my wife. She wanted a system for a main living area. There were to be no boxes or equipment actually in the room.
It all had to be flush. It had to be a good system and sound excellent. It had to have good internet and cable connectivity, and play discs, including those outside region 1.
So that certainly was a major challenge.
However, to say she is over the moon with this system is an understatement. This system has a WAF 10/10 rating +++.
Then I get to have free hand with the AV room, which she also gets to enjoy.
I won't deny that achieving high WAF is a difficult challenge, but also not unreasonable. There is a lot manufacturers could do, to make the task much easier.