Hi,
I believe the ranges that ILS/LOC frequencies reach need to be extended significantly.
Real beacons extend much further than the roughly 20nm that Navigraph ILS/LOC frequencies reach.
Please note places like LGAV and LFPO give aircraft very extended ILS intercepts often.
Depending on altitude these beacons can be received from reasonably far distances and can be used as long as they are within rated coverages.
Regards.
BL