The reason that there arn't may A2 posts is that there arn't many A2s. The A2 tech spec is brilliant, but, as I understand it, it was originally design was as a hybrid/dual fuel car. So it ended up too tall and too narrow and thus did not look quite right. I like it, and for technical attributes, I am considering buying one. I believe that it just don't appeal to the average Joe Public.
So you end up with a small user base.
Now this user base in probably in one of the following three catagories:
1. Old farts like me, and the wife, who love our VAG products.
2. Sad people who belive that owning an Audi is chic, even if it has a VW transmission system (A3 and TT included).
3. Wives who are given it as a shoping car.