A corals-first marine tank...
I've discussed this a couple of places, and some people are doing it, but let me put forward the advantages and the problems---if you have done or are contemplating doing it, chime in. It's at least worth a consideration, counting how prevalent parasites seem to have gotten in the hobby...

Pros
You can start setting up right after cycle.
You put your cuc in, dip, (do a short observation after dip for zoas, particularly) put a number...