That's a beautiful bird! Of course, they all are. Such a classic design.
This is my little frankenstein shortbird. I've owned a few proper Thunderbirds, but ultimately find that I enjoy short scale basses most. Was on the look-out for one of those 2011(?) short scale Thunderbirds for quite some time, when this woodshop DIY bolt-on body popped up on facebook marketplace. Not sure what wood it's made from, but actually executed quite well, though with a poorly done but charming natural finish. It already had a Fender style bridge, PJ pickup cavities, and a neck pocket ready for a long scale Fender neck, but I took it on as a challenge to create my own short scale t-bird, where I could go nuts with electronics experiments without much at stake. This was the end result and I actually enjoy it enough to where I'm no longer in the market for a Gibson shorty. The neck is from an Ibanez TMB-30 short scale, which fit the pocket perfectly and only required new bridge placement. The added tailpiece covers the 5 original bridge screw-holes, but also allows me to use medium-scale strings which my Alembic, Rickenbacker, and Guilds require, so I always have plenty of those on hand. Pickups are two passive EMG's from an 80s Steinberger, along with a wide/flat single-coil underneath the chrome mudbucker cover. Controls are volume and tone, 3-way toggle between neck and middle pickup, 3-way toggle to add in the bridge pickup full signal OR high-passed (which combats the mid-scoop and frequency cancellation that you've mentioned, but also allows for two very different and equally useful voicings). Finally, one of my favorite things about this bass is that it's pretty lightweight and balances 100% perfectly with no dive.
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