I've found that 256G is 'not quite enough', so my old Macbook has 256G and I moved my media folder to one of those flush-mount microSD card adapters. It's read-mostly so who cares about write cycles?
We only store the OS and apps, so anytime the storage is full it's usually cause someone hasn't emptied their downloads folder or they're incorrectly caching the the OS drive.
My experience in personal use is that data loss with microSD is extremely common, much worse than, say, magnetic disks (and certainly much worse than SSD).
