Our 24kwh does leave something to be desired in the very cold when using heat with it's very limited range but it is nice how quickly it heats, quicker than an ICE vehicle, it doesn't get as hot as an ICE vehicle but it sufficient. I make many short trips and I love that the engine isn't starting and stopping like an ICE vehicle, makes short trips much nicer. We still keep our Prius for 500+ mile trips or even 70-mile jaunts but for the most part we use the Leaf and the Prius can sit weeks without starting.
At some point, we'll probably end up with a Prius Prime and kill 2 birds with one stone, gas-free local trips(under about 25 miles) and ability to easily travel hundreds if not thousands of miles on gas, a PHEV would also save us the current $70 "EV" tax we pay on our yearly tabs
We might also end up with PHEV SUV instead of the Prius, which would have a higher and therefore easier enter/exit than the somewhat low Leaf but going the SUV route would mean <50mpg, more like <40mpg on ICE, making our long trips more costly and less efficient.
The Leaf has similar passenger room as our '07 Prius, maybe a tad bit less in the back seat but IMO where the Leaf really falls is cargo room. Many a time I've cussed the Leaf on not being able to hold what our Prius does, the Leaf doesn't allow anything tall in the back without hitting the glass
Is it perfect, no, is it very handy for what is, yes, would I still purchase it with what I know now, yes. It probably didn't make financial sense but back in '14 when I purchased our new '13 Leaf it was really our only option for a EV(not living in a CAFE state) and I kind of wanted to help support a fledgling vehicle, I was also impressed even the base model S came with heated seats, all around! and the icing on the cake was a heated steering wheel, which I sad has for the most part been removed on base model Leafs and AFAIK none have rear heated seats
We have lost a health bar but I'm thinking most of that damage was done when the vehicle sat on the lot for almost a year before we purchased it but we can still do our local trips, even in the cold with no real issues. I'm not really sold on Nissan quality, coming from several Toyotas but everything was covered under warranty and the Leaf hasn't really cost us anything out of warranty other than the crap OEM tires Nissan used