Congratulations on your new Niro EV! The car has great reviews and gets fantastic range and efficiency, so I'm sure you'll enjoy it for a long time.
Rapidgate also prompted me to trade in my 2018 Leaf, but in my case I gambled on another Nissan with an SL Plus. It worked out to $10k cheaper for us than the Niro (at least, at the time), and we knew the Leaf size and features matched what we wanted in a car.
The gamble has so far worked out for us: we have taken three long trips in the Plus this summer that we also did with the 30kWh and 40kWh versions, and so far haven't seen a hot battery or seen any charging sessions with less than the maximum charge rate. For our return trip yesterday, we started with a 35% charge and drove 300 miles from Lincoln City to Seattle by way of Astoria, and got home with 22 miles left on the dash. We stopped to charge twice, and after the second charge still only 8 temperature bars (sorry, I forgot to check LeafSpy). The outside temperatures were in the low 70s, so things might not have worked out as well for us in Arizona or Texas in the summer, but in the 2018 Leaf I would have expected temperatures in the mid 120s after that much fast charging. When we did this exact same trip last year, our final charge was at a painfully slow 16kW.