One of the things I most like about setting up for an audio show is the requirement to start fresh. You walk into a new room with perhaps new equipment, unfamiliar loudspeakers, furniture, and set about to make it work. You make it work as best you can with what you have to work with.
But it's a fresh start and sometimes that's the best way to maximize our systems. Before the immovable IRS loudspeaker system was setup in Music Room One, I wiped the slate clean in the listening rooms about every 6 months. Things change over that period. New kit, new wires, new settings, whatever. It's not only refreshing to tear apart what you have, reexamine all your choices and build a new reference setup, but it's almost always better than where you are now.
Yes, it can be a bit nerve wracking. What if you take a step backwards? What if you can't do better? What if you fail?
At a show you face those fears because you have no choice. At home you have a choice. That little negative voice in your head is telling you not to do it, you'll probably fail.
My advice? Any time you hear that little doubting Thomas in your head, give him (or her) a boot. That little voice will always get in your way and lies to you constantly. Don't for a moment believe the voice.
Saturday's a great day for a system, rebuild. Really.