They aren't even air cooled - they're passively cooled. That becomes an issue if you're DC charging often. Given its range, I wouldn't consider my Leaf for a road trip and have never use the CHAdeMO port. I've never come anywhere near a heat issue commuting in Pittsburgh summers and Level 2 charging. If you're DC charging in a warmer climate you may have a different experience.
Twice, during really cold days, I got a range warning on the dash with cabin heat on full blast (resistive heating) and moving at > 80 mph. I backed off for a minute or two and the warning went away and my range returned to something expected, so a battery heater would be nice. More so if I DC charged as a cold battery doesn't want to charge.
I'm grabbing F-150 EV on launch day and my wife is eyeing the ID.4 and the ID Buzz, but I may hang onto the Leaf for a commuter. Like I said, 0 problems thus far - it's a very comfortable, reliable, soulless appliance and my overall experience has convinced me that I've purchased my last ICE daily.