Better battery indicator (but that is a wish since the first X style camera).
Help/info for each function. Todays digital cameras are getting so complex that some help to that ultra short description in the menus would really help.
Allow me to assign ANYTHING into the Q menu, not just selected things.
Let me set the Time for more than 30 seconds. Even if it would be just 5 minutes, that would be really great.
Set AF-L, AF-L independent (on/off, button pressed).
More color selection for MF highlight. Red/Blue/White appears too often in natural things. I want to set that to shocking pink or lime green or some eye-sore yellow too. Or in the dream, have auto color. eg if red is on red, make that red blue.
Hold FN button for image style preview. instead of on off, when it is on a FN button. That on/off is really not very helpful. Often I want to preview it, not turn it on/off.