OK, so I have made a different cofiguration.
Regarding the HDMI matrix switches, it is indeed so, that only the higher end models let you do something about the EDID. It is really lame, that most of the manufacturers of cheaper splitters/switches don't even bother to mention this in their manuals!!!
Anyway, I was thinking about this switch at first,
This would be absolutely perfect, because of the included extenders with their own IR remote!!
BUT it seems you cannot force the EDID of one port to all other ports, like on the high-end switches, which would mean, that everything would be downgraded to the lowest possible denominator.
Still, there was this one sentence in a review:"With this matrix, the source is downgraded to the least quality of the TV's watching a given source."
Would this mean, that if I will root, lets say, the PS3 just to the Onkyo reciever, and no other output device, the PS3 will detect the output device as a 7.1 1080p 3D capable device?