I do like the general rule of a 50-55 mile range for 60-100K miles and that does bring the point home about needing higher capacity batteries especially if one tends toward the long vehicle ownership side. Of course, you could also spring for a new battery for $5500 and have a "new" car again - although that seems too costly.
A $5500-$8500 battery replacement is actually not that costly if it has to occur between 100K-150K miles of use (depending on battery capacity). the problem with the current 24-30Kwh batteries is that, they need a replacement much sooner unless 50-55 miles of range fits in your daily lifestyle. $5500 battery replacement after 60,000 miles is a costly propostion.
It is back to that most commonly held view point that 200 miles or range is the magic number for the common man's EV adoption. Very few people need 200 miles or range on a daily basis, but it takes the range anxiety out for all. The variation in range by seasons also becomes less of an issue with so much range. And it can be used for the occasional 300-500 mile weekend road trip. It also keeps the car stay usable for 10 years/150,000 by providing at least a 100 miles of daily range. Finally, it can be fully recharged overnight in 8-9 hours - which is again a sweet spot for daily overnight charging.