Start with pleasant surprises, the seats are definitely more cushioned, the 2017 seats never bothered me even on longer trips but these new ones are more comfortable. HD camera is a big improvement and now has dedicated button to switch between split and fullscreen view, much more useful. Separate buttons for heat and ac, a minor but welcomed detail. The rearview mirror has a new more modern sort've rimless design, I like it. Improved suspension and smoother ride but still fun to drive. As for minor disappointments: No improvement to maximum charging rate, i would call this major but Chevy wasn't promising it in this update so can't complain too much, but I was holding out hope that it would've seen a bump along with the new battery chemistry, at least to match Kona/Niro/Soul, on the plus side of course is the extra 21 miles of range and better cold temp battery performance. The steering wheel feels different, and this is totally subjective but I prefer the softer more cushioned feel of the wheel on the 2017 Premier. The wireless charging pocket in the console has not been improved, it's still ridiculously too narrow, whose wireless phone fits in this thing? Not my iphone 8 plus, useless. Lock/unlock buttons removed from rear doors, not a huge deal unless you really like the convenience. Things I would've loved to see but have to hold out hope for 2021 redesign: Faster DC charging, better taper curve, adaptive cruise control, power driver seat with memory settings, auto power folding mirrors. Not too much to ask for, I hope...