What would you upgrade next if you had my hifi ?

Lose the paneling. I'm not saying this because paneling went out in the 70's...acoustically it stinks. Seriously, paneling does nothing but vibrate. If it is installed over drywall or plaster, it can be nailed like mad or glued to eliminate any resonance but that may be too permanent. Most paneling acts like a giant bass diaphragm.

Also, the Revel and Levenson gear are extremely revealing. With sound resonating off the paneling, your system is probably brighter than need be.

Last, your TV is really low isn't it? Do you sit on the floor? I always thought that there was some correlation between tweeter height and the 2/3 point on the tv height?

Your Mid Fi Preamp. To do you a favor, I'll take it off your hands because I am a really great guy. Maybe I can find a use for it in my garage system.

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Are those wind chimes ?

Is it breezy in your room?

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Interesting responses , to answer Mapmans question first , I don't no if anything really needs improving , but to be an audiophile you also become a bit of a perfectionist so your journey is never over . I have many interests and hobbies , our beach house and incredible new boat are great , but music and audio are my only real passion . At this point upgrades are expensive and improvements are small , the old diminished returns syndrome I guess , so I want to make the right choices not just through money at it .
To answer another question that was posted , I do have mid fi interconnects , ( Audioquest , Madrigal , NBS , ect ) I did try some of Shunyada's top tier cables , $3500 a pop but the difference was very small , so I pasted .
The wind chimes were the last thing my five year old daughter gave me before she surrendered to health problems .

More velvet paintings! I think you need an Elvis to round out the collection.

Seriously though, I concur regarding the paneling - unless its nailed onto furring strips, it essentially makes for multiple resonating cavities which tend to act as broadband diaphragmatic absorbers or Helmholz resonators, affecting room acoustics (especially the low end) significantly.