Beyond the center-block, neck & fret board woods, what difference in sound do the wing woods bring?

On a neck through build, the wings don’t have as much of a tonal contribution as a neck/body combo you’d experience from a bolt neck. The wings are more-so along for the ride. Some of the heavier/more dense woods can weigh in a bit tonally. Most of my builds are geared towards being lighter vs heavier. With neck through, the majority of the tonal influence comes from the neck woods and the fingerboard. The wings (especially if they’re on the lightweight side) serve more of a means of weight reduction, giving a more neutral tonal response. The wings are important to the overall full body resonance of the instrument. So; with that in mind, they are part of the sound of the instrument.