And therein lies the rift - if you're a meat and potatoes kind of guy with a plain vanilla approach to life and focused on the anus of the lead dog then a Fender is probably the right choice for you. But if you fancy yourself as a bit of an outlier with a different tune in your head and a desire for a touch of flair and excitement in your playing then a thunderbird may be your better bet. Either bass can deliver most of what you need from a sound standpoint but like a farm tractor or a Ferrari, you decide which one you'd rather be seen in.
If one happens to like 7enders AND Thunderbirds, does that mean we are less focused on the anus of a dog?
I agree that the very first model of precision basses (similar to the Sting or Mike Dirnt signature models) do seem a bit dated (but still kinda cool). However, I don't think that it holds true with the newer P bass (with maple fretboard). I think it is like looking at a Telecaster versus a Stratocaster.
I also agree with @kat888's characterization of the Thunderbird as a product of the 60s vision of modernity (in much the same way as I see the 7ender Jaguar design). But I see the lines (and headstock) on current 7ender P bass as modern too. For some reason I see the Jazz as a bit more dated. I don't know where I would put Rics in this mix?
Everyone is different in their sense of asthetic but I find it interesting that the design of most electric guitars and basses is an attempt to recapture the past. The bodies and the pickups are geared to revisiting something from 50 or more years ago. There seems to be little innovation. Most companies copy the Strat, Tele, Les Paul or P-bass body style and pups configurations, with a tweak here and there (and a headstock shape that won't get them sued). Most pickup makers also try to offer vintage sounds (tossing in cloth-covered wires for good measure). So, it is like most instruments are all old pickup trucks or farm tractors. And it is not like we are buying a Stradivarius. And I have never understood the "relic" finish thing. Would we pay a premium for a classic car and ask that some dents and scratches be added for effect?
It does seem to me that there is a little more innovation in bass amps and cabs relative to guitar amps. Most of this seems about making gear lighter and easier to schlep. I share your love of the tube tones. But this stuff where people want to have a particular NOS tube for their guitar amp seems like this Quixotic quest for "discernable" tones of yesteryear.
Those are my observations. I am going to run off now and find some dog butts!


p.s.
I had never seen a 7ender-bird prior to joining this list. I have to say that the maple P-bass neck on a bird body, which some of you have built/are building, is hands down one of the coolest looks going.