@Avionic I agree with you 100%, the wider spotlight is better (if a bit too intense) than the 'cabin bounce' effect. To implement our own fix, as far as I have read, we'd need to copy one of the Asobo light .fx files to create a new light with the wider cone and reduced intensity (easy enough), and then reference it in the systems.cfg file. It might also be necessary to put the path to the effects folder (with the new effect) in the aircraft.cfg file. I've skimmed the SDK and it gives all the information for each part, but doesn't 'join the dots', so I'm not sure if would work or whether more steps are needed.
I'll wait for an expert on this one. If I try it and fail, I'll likely waste hours trying to solve it out of dogged determination. I'm not sure it's worth that much time investment so it's safer not to start! I can get by with the cabin bounce effect for now until something better comes along.