If some of the claims in patents like the one Sony filed are implemented, it can do a lot to shave off the lead time that deters more fine-grained loading or unloading of resources, and for the more conservative amount of extra buffering.This is very true on PC and even more so on current generation consoles.
How if at all do you think it will compare with a good controller and very tight IO path, allowing dependable access to the drive at say 50 to 75% of its theoretical maximum?
It sounds like not only will the drive itself be much faster than current gen HDDs but the whole access path is refined to eliminate bottlenecks that exist on pc say.
Making it low-overhead and reliably fast is important to get developers to buy into optimizing for it, although this may be challenging if cross-platform or cross-generation compatibility are concerns. Something with high peak numbers but hidden glass jaws can lead to underutilization of the features, as worst-case behaviors can often rule out ostensibly superior choices in order to provide consistency.
The tighter tolerances may be a risk factor for the hardware designers if they are making a lot of custom choices, since there won't be fat timing margins to hide bugs or weak points in.