I too like some of the "minimalist" or "bonsai" scapes I see on this site. As a grower of a actual bonsai trees, I have never understood that word as applied to a reef aquarium however.
But sometimes I come across one that looks nice but I have to ask myself "where will they mount the coral?" Some don't have much room. I want lots of coral and room for them to grow without going to war on each other. So for me the trick is to create something that is elegant (which I think many mean when they say minimalistic), will provide good flow & micro environments, but has enough mounting space to allow me to spend large amounts of money on the coral. Combining elegance, a believably naturalistic look, enough room for lots of coral to grow based on their needs is what I'm after and is what I think is the pinnacle of the art of aquascaping. And that can be done in many different ways. Just another opinion!