I liked your review, but do have some details you might not be aware of. I'm on my second Nissan Leaf. The 2011 was leased or I would still have it, but at the end of my lease I found it better to purchase a 2015 because of the better charging and slightly better range (which really is the reason I leased to begin with).
Some minor corrections to your posting.:
1. DC Charging has recently been identified to actually be better than slow charging based on ChargedEV magazine's report of a university study.
2. While you did have ECO mode engaged (good on ya!),you were not driving with Braking Assist engaged (move the shift to the D/B position twice to engage). While this doesn't sound like much, your downhill battery recovery is greatly enhanced.
3. Always plan for about 25% of estimated range. Find charging stations along that guideline.
4. DC Quick charging does cut off at 80%, but the charger continues to charge at a slower rate, very similar to a Level 2 charger (Even tech support usually gets this wrong). You could leave your car plugged into the Quick Charger if no one is waiting, but it's just as easy to just keep plugged in without worrying.
I recently took an out of state trip between my home in Virginia and my brother's home in Maryland. It's also about 75 miles each way. The trip over was delayed due to events in Washington, DC, so the high speed driving was pretty limited heading north, but the return trip was 60-65 speed limits all the way. I left my brother's home at 93% and arrived home with 22% remaining. I did stop for a quick charge before actually showing up at his house and debated returning for a top of, but figured I'd be okay. Oh, and we did have the AC on (my wife is definitely a creature comfort kind of person).