I can't comment on on the later suspension revisions but my 2018 LC500 rides pretty comfortably and, of course, you have AVS so you can use Comfort Mode if you want.
Regarding the Sport Plus additions, I have driven cars both with and without the LSD and RWS. On the road there is precious little difference that I could detect. If you want to take the car on the track then you might get an improvement to lap times. Versus the LSD, the traction control takes care of wheelspin and do you really want to drift round roundabouts on the public highway?