How is Windows using SSD to its fullest? All it seems to be doing is taking advantage of the greater speed to perform more I/O that it didn't do before which negates any performance improvements the SSD brings.
I'm not sure this is the right take, as I don't believe it's a matter of choosing to optimize for SSD vs. HDD's. Disks got faster, so the bar for baseline acceptable performance got higher.
I'd rather windows uses my SSD to the fullest, than that it makes concessions to spinning disks.