User blog:MushrooMax2468/What will new blocks do?

Okay. So we have heard about new blocks coming to most editions of Minecraft. Example: Diorite, Andesite, and some new Flora. But I want to know if they DO anything. Are they like Quartz, purely for decoration? I would like to see your feedback. I think Granite and co. will be a decorative block. But what do you think?