This is what I have been saying for a long time
The Boeing 747 needs a facelift, a new look, or simply put, a major update with improvements, both in terms of textures—not that it looks bad, but rather that it needs to be improved and updated to look even better than it already does—and in terms of sounds in general. This is similar to what they did with the Airbus A350-1000. I've already mentioned the lighting issue you mentioned, and they also need to vary the engine options. They shouldn't have just one engine, especially since the 747-400 variant, as far as I know, had two engine options. They should do the same as they did with the Airbus A321 and A329, and the Airbus A320neo, which has two engine variants to accommodate different airlines. And speaking of airlines, it also needs more airlines that used it added to the simulator, along with more livery options for the aircraft.