I've just tried the ILS 09L in the FBW A32NX and it didn't work for me either. I'm using the MSFS SU8 beta version, version 1.1.0 of the EGLL scenery and I do not have the Asobo version installed. 27L worked okay for me yesterday.
Will any details be added to the front of the terminals airside as they look a little sparse when you taxi around and pull up on to stand? More effort seems to have be put in to the landside areas where you don't taxi. Thanks.
Excellent news that you are tweaking the airport, can I make a simple suggestion please, change the colour of the road tunnel access walls, they look a bit dark.
Also saw the excellent trailer, I'm hoping that a little more detail goes in like the road textures and pavements between the terminals and the stands, and that the VDGS post locations are moved a little to more accurate locations.