The most critical change has been the addition of the redstone clock system, which acts as the "heart" of the automatic portion. It's a big open controlled mess of redstone.
This morass of redstone technology tells the sugar cane farm to harvest every 10 minutes, and the wheat/potato/carrot farm to launch every 2 hours. So far everything works pretty dang well.
Underground I have expanded the item sorter and storage system. It's getting pretty long.
And the triple farm itself. I took the stuff from the redstone village I was previously working on and put it to work here. I've yet to have an issue with it.
The most active part of this whole thing is a hopper clock that fires once a minute. To some that might be annoying. I find it quite fun to let the game run in the background on low volume, and hear the pistons fire rhythmically. Eventually I want to make another one of these setups, but underground. In my main room I want to be able to hear the main piston firing, so I might place it underneath the chamber or something.