David, I doubt you are flailing, but the choice is tough. You have a great primary system with very few shortcomings. That is a real luxury that affords you the opportunity to focus on something very special in your 2A3 based system. I mentioned the give and take we are all faced with. So given the strengths of your primary system, it would be very easy for me to give up bass extension for example if I could make gains in immediacy, transparency, and as you said an emotional connection with the music. Your gravitation towards a single full range driver IMO makes good sense. I once put together a Fostex fe167e full ranger in a 0.5cf BR enclosure and was shocked how nice it sounded. Paid special attention to frame damping and it produced a surprisingly smooth sound with no "shout". Nice, full, balanced sound with a fantastic sound stage. Very natural. Now some will go on about the limitations and compromises of full rangers. But that's exactly the point. Making the right compromises that will let your new amp shine. And when you need to listen to full scale works you know what to do!
So, as much as I would love to hear your take on the Tekton Perfects, and I'm sure they would be a great choice, it is also good to consider other options that will allow your 2A3 to do what it does best.