There are additional airport diagrams that could be added to iFLY.
https://www.michigan.gov/aero/0,4533,...9156---,00.html
They are already organized into individual PDFs for each airport and it would be nice to have these added to iFly to supplement flight planning when the FAA doesn't publish diagrams for smaller airports.
I would suggest if there is a liability with adding State Government DOT diagrams, that they could be color coded with a border to identify them as non-FAA source data.
The State of Michigan publishes these once a year. One of the diagrams is attached for quick reference.