Not sure I understand the issue with no min. shuter speed and Auto ISO

I have auto ISO on my D800E. A lot of people set it with minimum shutter speed (important with that camera to have at least 1/125th sec to prevent showing motion blur) and in varying light conditions let the camera sort itself out.

Of course it can all be done manually but its faster.

The downside is that higher ISO= worse image quality and lesser dynamic range.

Not sure about the XE1 but typically digital cameras have their highest dynamic range at their lowest native ISO setting. It is usually not too bad up to about ISO800 and then dynamic range falls off quite sharply from there. Usually ISO12600 is the point where images are useless.

But if you set auto ISO to 800 on XE1 and kept minimum shutter speed (for non OIS lenses) to say 1/125th of a second you already have autoISO. So yeah it then becomes a matter of those other couple of features that someone posted that don't work in that mode - live histogram and another feature.

I usually don't use those anyway but I can see many would.

Greg.