Courser sand, yes, but I'm still doing a DSB.... BWAHAHAHAAHAAHAHAHA
I do think a really fine grain sand is awesome for microfauna, but its just a pita when something agitates it. My blenny, for whatever reason, pulls a chinchilla and takes sand baths from time to time.
And im working on getting it filled up. Trying to think of something crazy I can do with the rock formation. Something that will allow me to keep lps, sps, and softies.... but in a defined manner such that I dont have to worry about them fighting each other.