As the owner of a Q07 (W.I.P "black project"), it was difficult to come up with changes but, after several days of staring at and thinking about my case, my thoughts on this Q are...

Size...width; +17mm, height; same, depth; +52mm.

Remove 3.5" drive support but support 4 or more 2.5" drives.

Keep usb ports where they are at bottom (but slide them off center) and move power/reset next to usb.

Seperate removable MoBo tray with 12mm gap between MoBo tray and side panel (this will free up room for 2.5" drives or cable management).

That's about all I can come up with for now but if I think of something else, I'll post it as well.