That's true, really. But nothing's stopping you to increase the /home partition size similarily.

I feel that the default setup is skewed a bit anyway on the 64G version; for the 16G version it is fairly allright to have the partitions set up as 4G/2G/9G, but for 64G version to have 4G/2G/53G is absolutely hilarious. I mean, come ON? And to have this formatted as FAT on top of that, quite uneconomical!

I rather belive something like 10G/8G/40G is more proper.

The only reason I see that 64G device is partitioned the way it is because of compability with the EMMC flash images. As it is, you can use the same images to flash 16G and 64G devices.