I have a unibody 15" glossy screen and it has far more contrast and clarity in outside situations than the matte I used to have which washed out to near invisibility in sunlight.
The glossy screen is also more easily cleaned, and offers protection.
Indoors, I do not find even the remotest of distractions relating to reflections.
I would defy anyone to sit at my desktop or laptop computer in my home and say they can see any problem whatsoever with reflections, and I am in an ordinary domestic situation with both a central ceiling light and a table lamp. I have no problem in remote locations either. The only time I have seen a problem with the glossy displays is in the Apple Stores themselves, with their multi-directional, specialist retail lighting that is far from what 99.9% of users will ever encounter in the real world, whether indoors or out.
I personally believe that anyone who really and truly has some kind of specialist professional need for a matte display would also be insisting on higher resolution, more color-accurate screens than the present 15" in any case.
Sorry... no signature on the petition from me. If anything, I'd prefer a petition calling for a high resolution screen on the 15". Without that, the glossy/matte argument is just about cosmetics.