I have a 2014 T-Bird with the inlay and a Babzic replacement bridge (per the ongoing conversation)I can share my experience and get a chance to post a picture of my bass (again)!
I played a 7ender Jazz bass for the previous 22 years. I was flat out, anti Gibson basses because I had been taught that "Gibson Basses are muddy", "Thunderbird headstocks fall off if you look at them the wrong way" and "they are big, heavy are equivalent to strapping on an coffee table from the 1970's....."
About a year ago, I was asked to join a band again (all original material) and realized that the j-bass needed some serious work to get it gig worthy again. I had only been playing it in my home. It more than likely needs a re-fret and a neck reset, the neck pocket is too big, etc., etc. Also, its value has gone up quite a bit and when I did use it on a gig, someone offered me $1,800 for it.

Needless to say, I figured I should use something else for gigging.
I looked at all kinds of basses but decided if I was going to get something else, I wanted it to be different from the jazz and not just get another fender type bass. I am not sure how but I stumbled upon a Gibson EB14 but the humbucking pickup really sounded interesting to me. That lead to Thunderbirds and then to Talk Bass. I did not know this place existed until this year.
I found a listing here in the classifieds for a 2006 Sunburst Gibson T-Bird at a price where I figured, if I did not like it, I could re-sell locally and get my money back. When I got the bass it was quite a shock! It was lighter than my Jazz by almost a pound and the tone on both the low and high side of the spectrum was significantly better than my jazz bass! Whoa! 30 years of playing mythology debunked in one afternoon!
The neck felt a bit longer and the radius was different (flatter) but it felt comfortable to me right out of the box. With the help of folks here, I got the ergonomic differences figured out pretty quickly and myths like neck dive, super-low strap height etc. were never an issue.
The t-bird came with a Babzic bridge installed and the sustain was great. The adjust-ability was super easy and really straight forward.
I swapped out the stock pickups for a set of Lollar pickups after hearing them online. I really like them. To my ear they give a bit more clarity on the high end. It is a taste/preference thing.
The bass was playing and sounding great the only thing I did not like was the finish. I don't like sunburst. I looked into getting it re-finished and it would cost about as much as the bass itself. I stumbled on to a Heritage Cherry T-Bird on the Guitar Center Used Gear website ( I did not know that existed until I started hanging here...perhaps you are picking up a theme....) and I snagged it for the same price as the 2006. I sold the 2006 to pay for the 2014 and added a bunch of chrome hardware.
Looks like this:
The sound of the bass is fantastic and I love the way it plays. I have gotten compliments (When the hell does a non bass player, compliment the bass player,me, for their "tone"?...ummm..almost never!) on its sounds and looks. I love it and can't wait to get into a recording studio, hopefully in a couple of weeks and get some stuff done with it.
I found the Babzic bridge to be similar to the Lollar pick ups in that they both help to bring out "more"of what is already there. Are they required? No. I like the addition of both.
Sorry for the "War & Peace"style post but nobody else I live with wants to listen to me go on and on about this bass anymore.....so I do it here!