I wish this car had a more production-ready interior, as that's what I'm most eager to see with regard to the next LS.
With that said, I absolutely love this concept. It's L-Finesse in the most mature and refined form we've seen: the design is aggressive and elegant, but also rather delicate in detailing, with classic proportions. The NX, RX and RC have all been so chisled and sharp... I wasn't sure how those cues would transfer over to a flagship luxury vehicle. It's a little more toned down, but for this application, it has to be.
The wide-set front fenders/shoulders nicely frame the front end of the car and provide a lot of depth to the side flanks. I can also easily see the proportions of an LS F shining through, with large, wide wheels pushed as far out to the corners as possible.
The side profile is all-together quite simple, but set off nicely by subtle details - the way that the chrome trim twists as it moves upward from the shoulder line into the C-Pillar, the inward "tuck" that happens after the rear door crease heading into the back wheel well, and the character line that extends from the front bumper to the back. These are very "LS" cues - just grown up, re-imagined and newly implemented.
The rear end isn't particularly exciting to me - I can see some potential if it was slimmed down and simplified, but as it stands now, it's a little overwhelming. I see similar "afterburner" detailing like what was inside of the LF-LC's tails. The chrome overlay is similar to what is on the NX tail light, and what we also saw on the LF-LC.
Some of my favorite screengrabs from the video that show more detailing than most of the press pics:
