All of the things that are going on in your tank ie: great polyp extension, your plate taking more food, the gorgonian etc. are hallmarks of a Zeo tank and the low nutrient environment that it produces. Looks good!
I'm sure that the cyano will disappear as the nutrient sink in the tank is used up... It will be interesting to see how something like the gorgonian, which seemingly did very well in the high nutrent environment, will fare with less nutrients available in the water column.