I like the dedicated 2.5" SSD drive mounts of the current case.
I'd love to see a TRUE modular case for the future, with no 3.5" or 5.25" drive mounts to give an ultra-small form factor -- but with an available 3.5" drive module that would stack under/above the case if you needed mechanical...
How would a GTX 660Ti enhance my gaming experience?
SPEED.
How does the Asus DirectCU design enhance the GTX 660Ti?
Cool and quiet, with headroom for overclocking, reliability, etc, etc, et cetera. All the reasons that I bought a previous generation DirectCU vid card from Asus.