Not sure if this post will be helpful, but here's my experience with Taylor's 614:
I've always been a fan of the 614 and the 714, regardless of the manufacture date - they're my favorite Taylors. The earlier 614s were great - some of the best maple guitars of any brand IMO. I even had Taylor custom build a maple grand auditorium for me in 2012: quilted maple with an Engelmann spruce top with tobacco sunburst finish on the entire body and neck. That was my pride and joy until I got a chance to play the newer version of the 614 in 2019. Andy Powers understood that maple should not be braced in the same way that rosewood or mahogany is traditionally braced. His redesign of the 614 in 2015, I think, really changed the game for me. My V braced 614 is a go-to guitar for any application instead of being a niche guitar as most previously built maple guitars were. Whether X-braced or V-braced, the newer 614s are both more sonically and visually elegant than their predecessors, again IMO. (I love that hand-rubbed brown sugar stain on these guitars!)
Regarding electronics, I don't believe that you would find a 2015 (or later) 614 with that ES1.3, which is also my favorite Taylor ES. Once I tried the ES2, I began ordering Taylors without the electronics, using an after-market pickup system that is less invasive and completely reversible. As such, my 2019 614 has an LR Baggs system instead of an ES, and it works beautifully. So, my advice would be ideally to find a 2015 (or later) 614 without electronics and have a good pickup system installed. If not, go for that 614 with the ES2 if you can work with it.
Good luck with your search!