Perhaps my use case is a bit esoteric, but lack of sparse file support in HFS+ is mildly annoying. Sometimes I would forget and accidentally create a huge one,

Perhaps my use case is a bit esoteric, but lack of sparse file support in HFS+ is mildly annoying. Sometimes I would forget and accidentally create a huge one, then I'd have to wait for the OS to finish zero-padding (it's non-interruptible) or fail with ENOSPC. Having a fast SSD helps. :-)