It is required for European homologation. Personally I don't mind it and I think it is an important safety feature. I assume you are talking about the cobra light. The light fitted to the models that do not have a spare wheel is much less obtrusive. It is hard to imagine what else you could do.
A wing or a spoiler at the back would look even more out of place, but it might stop the backdraft into the cockpit
These are the rules/Legal Requirements:
The 3rd brake light should be positioned to the centre line of the vehicle whenever possible. If, due to any obstruction or vehicle design, this is not possible, it should be positioned to the off side i.e. Driver’s side, of the centre line.
The height should be no less than 13.75” (350mm) and no more than 59” (1500mm) from the ground or if the structure of the vehicle makes this impracticable no more than 82.5” (2100mm).
Hood down there are a range of oprions, including on the inside of the upper screen rail, but hood up?
The Cobra light is probably the least worse option.
I did think of a strip of LEDs in a second chrome tube siamesed along the top of the luggage rack top tube, but a lot of work to make properly and it would still be useless when the rack has luggage on it. The off set mounting is interesting, I'd notbeen aware of that possibility. One on each side of the rack perhaps?
