Here's something very simple to realize. Just by accident I detected there are excellent English/German language manuals available from IPACS under
http://www.ikarus.net/en/manual-aeroflyfs2/
http://www.ikarus.net/manual-aeroflyfs2/
I did find several points I overlooked so far. May I suggest providing these as pdf with the simulator and perhaps place a hint after installation? This might answer some support questions in advance.
Thanks and kind regards, Michael