My goal with this system is not "The Absolute Sound" but "The Delicious Sound". I've learned over the years that whenever my system moves away from analytical and accurate and becomes warmer and more forgiving I end up listening to a LOT more music.
Some may find the combination of McIntosh sources + Shindo amplification + Tannoy speakers to be way too much "warmth", but for me it's just right!
What's the difference sound-wise with the set-up as-is and with the closet door removed? Have you thought of relocating the guitar(looks like a Macferri which my Turner Compass Rose is based on)?