First off, way to completely
First off, way to completely overblow the battery degradation issues of Nissan leafs. I recently test drove a 2011 that had 80k miles on it, had been exclusively quick charged, and had the factory battery pack; it still had %87 of its rated capacity left. And this is in the Midwest, where winters can easily go to -30°F and summers can get into triple digits. Furthermore, you've literally advocated for the use of a battery technology that is known to lose capacity (sometimes very quickly!) when taking a charge after a partial discharge.
Another issue is that you advise the use of trickle charging. Yes, charging generates heat; that is not up for debate. However, the trickle charger is spec'd to have an efficiency around %75; meanwhile, the average Level 2 charger has an efficiency around %85. So you're quite literally advocating for wasting electricity there. While we're on the topic of charging, has it never occurred to you that the rate of charge will slow when battery temps get high? This is required for ALL battery technologies; otherwise it doesn't matter if it's Li-Ion or NiMh, that battery WILL go up in flames. And while we're on the topic of battery temps; if a battery is heating up during discharge to the same level as when charging, then heat is the least damaging thing going on because you're pulling WAY too much current from the battery and THAT is what's damaging the cells.
And lastly, don't understate the practical range capabilities of any vehicle. Saying that a leaf is only good for grocery runs or "visit the grand kids (next door)". Even out in middle-of-nowhere Wyoming, your "next door" neighbor will be less than 40 miles drive away (even if you get lost trying to find them); that's easily attainable for a car with around 84 miles of range. And given the fact that over %90 of people commute less than 100 miles one-way, I'd say a gen-1 leaf would likely work for most people as a commuter car.
And that's not even mentioning that a taller person like myself may find the Prius hard to get in and out of the driver's seat. I know the 2015 Prius I test drove was a nightmare for me, and I'm only 6' 3".
Lastly, let me just put some cost numbers here for ya. To make a Prius cost competitive with a leaf using my current electrical rate, gas would have to cost less than $1.40/gal, assuming the Prius gets 60mpg (rounding up the 2018's numbers) at the absolute worst. Now, I don't know how much it costs where you are, but the cheapest gas within 100 miles of me is $2.64 (93 miles away, thank you very much)... quite a far cry from the $1.40 to make a Prius competitive.