Adobe Scan should leverage the iPhone Gyroscope sensor

Just an idea ...

The Adobe Scan app should leverage the iPhone Gyroscope sensors (and Android phone counterpart) to easily keep the camera at absolute level to a document being scanned. That way documents look less skewed (as even with the correction it still does not look perfect).

The functionality would e.g. bring up an overlay of crosshairs or "absolute level" indicator that show positioning as "level" with a document placed on a flat surface.