What is the #1 equipment want currently on your HiFi horizon???

Acoustic treatment and I'm done. 

Not sure, but I have been thinking of a retro/memory lane system. Items I have had in the past that I liked/loved.
So far my thoughts are:
C.J. ART pre-amp
Classe CA-400 power amp.
Classe or another CD player with the ultra-analog DAC or the Audio Research CD2 player.
Wireworld Gold Eclipse 3 for interconnects and speaker wire
Magnum Dynalab 108 Tuner with upgraded tubes.
Magnepan MG-20

....or I suppose I could get an early Wurlitzer or Rockola Jukebox with all the early British Invasion 45 rpm records....you know, DC5, Beatles, Stones....etc.....and of course Dusty Springfield.

In the next three months I am buying the Classe Delta Stereo. 
After that, upgrade my old Audiovector Mi3 to either R3 or R6.

The #1 thing I am looking for, that I should have thought of long ago, even though in retrospect it is so totally obviously the best way to get everything I want done, is a time machine.

Dr. Emmett Brown has a flux capacitor. You can put some mat tape on it and likely go further back than usual!