My dream would be to have multiple high end systems/rooms that I can cycle between. Genelec 8351b 7.4.4 Auro room, Revel Salon2 room, Kii3 + BXT room, D&D 8C room, Grimm LS1Be room, JTR theater, LX521 room. Preferably multiple different dispersion width options, as I enjoy aspects of different dispersion patterns for different reasons.
That said, I don't consider that "real", though it would still be less than many 2.0 ultra high end systems(Karma, Focal, Wilson, etc.). More real would be to maybe have one multichannel room and one 2 channel room.
Another dream would be something like the Beolab90 if I could only have 1, but I'd still rather have multiple cheaper systems.