Thank you for being tactful. I don't disagree with anything you've said. The room plays such an important role. I will never get the depth of soundstage and holographic 3D presentation that I've experienced from many of my friends' systems. I'm pretty sure that effect requires sidewalls (or at least parallel walls). I can live with that; for me the tradeoffs are worth it. My room doesn't prevent me from getting all the other attributes I care about; it really comes down to careful matching of components. I have 3 systems in my house, 2 of which are in dedicated rooms, plus a high end portable rig. I know what type of sound I like. I am a 'recreate the music event' type of person.
One thing I have learned is that investing in this hobby is a slippery slope. What satisfies Magico S5's does not necessarily satisfy the M-Pro (very different beasts!). It can be frustrating but when you make a move in the right direction, the satisfaction makes it all worth while (well, at least for me ).
I have listened holographic 3D presentation with great depth in a room without sidewalls - the large area is functionally divided in three rooms, the audio system is placed in the cental section of an L space. IMHO most of the the spatial and life like effects are due to the proper choice of source and electronics coupled to an optimum positioning of the listener and speakers.
A good friend owned the Infinity Beta's with the bass towers in an absurd asymmetric positioning - but using vinyl had a fantastic soundstage and depth. A large orchestra sounded really lifelike. However when using digital it was completely flat - great bass and tone, but uninteresting. This does not mean that digital is inferior to vinyl, it just exemplifies the whole system was tuned to his analog rig.
BTW, for me holographic does not imply pin point - it means having its own natural acoustic space in the stage.
And yes, the satisfaction makes it all worth while! It is really an enjoyable hobby!