I think what's overlooked is the software upgrades that are not reported in marketing materials. When I traded in the 2018 for 2019, I could tell instantly the ProPilot Assist had upgraded software. For example, the ping pong lane assist was much smoother and I'm pretty sure there were improvements in the intelligent cruise control as well.
I look forward to hearing feedback on the 2020 from folks.
LEAF 2018 SV Gun Metallic (traded at odo 7350)
LEAF 2019 SL Plus Gun Metallic
5/4/19 - odo 570, SOH 99.22, AHr 175.02, Hx 103.17
5/4/20 - odo 11,242, SOH 93.13, AHr 164.281, Hx 115.21
5/4/21 - odo 20,030, SOH 91.24, AHr 1160.95, Hx 113.54