Arm out the window
I hear what you are saying about shooting approaches but with a private ILS the facts are: The thing cost us around $1.5m to install, since it was installed we have had to ante up $1.5m in maintenance costs to Airservices who are the only people allowed to touch them, and what we have now is a worn out old ILS that we need to find $1.5 million to replace. We'd just as soon dig a hole and bury it and forget we ever owned one in pure financial terms. VOR/NDB/DME we can't charge for. Don't own 'em, don't care.
Just sayin.