I got called a master again the other day, it makes me very uncomfortable, I just do things how I think they should be done.
Running a mixed reef is very fulfilling for me, and apparently easy!
It is easy but takes a lot of planning and patience.
I guess it is an approach, aquaculture, mariculture, it is not a definable "system" it is creating a system that should have the ability to deal with nutrient import, feeding fish, they poop, nutrients are created, things absorb those nutrients.
I went though 18 months of pain getting this about right, over the years I figured out what I did wrong, I should have started it macro algae heavy, I am just a bloke doing things differently and trying to learn more!
The one thing I would say is that higher nutrients seem, imo to makes tanks more adaptable, corals might not be super colo(U)rs but they will be healthy!