Who says your tea set can't be architecturally interesting? When not in use, I'd be happy to have a good looking stack.
I love a repeating pattern, especially on food. Even better when it's done with something as delicious and natural as blueberries. Nothing fussy, no artificial coloring or hours slaving over perfectly smooth icing, just a fantastic and undoubtedly delicious polka dotted tower of celebration. I'll toast to that!
Source: Poires au Chocolat http://www.poiresauchocolat.net/2010/04/blueberry-and-ginger-layer-cake.html
As an American, I'm not super familiar with the traditional high tea ritual. Once for a bachelorette party I had tea at the Bellagio with a bunch of fancy ladies. We had champagne and lots of tiny delicious foods. This cake would have been a gaudy yet not unwelcome addition.