I think a trend we are going to see soon is an attempt to significantly simplify and increase automation for reefing.
I think we are seeing the start of it now with automated testing machines (like the Neptune
Trident) and companies like Red Sea pushing
reef tank recipes. The next step is combining those into a system that tests, doses and tells you what to do (ex. water change, refill additives, clean equpiment, feed).
The simplification will come in the form of the interface being more along the lines of choose your tank recipe (click the max growth sps button or whatever) then plugging in the required equipment and tanks of additives. Next you will just need to tell it when you are doing things like feeding or cleaning something, so the required devices can switch to the right mode. Want to feed? The system will know to turn off the pumps. You won't need to program it. Water change? Click the button (on your phone?) Heater, pumps, and ATO are off. You will also get a reminder in a bit if the water level is wrong or if you don't tell it you are done.
It won't be for everyone, but for some it will be nice to just leave most work to the machine and focus on the parts of the tank you enjoy more. It will also appeal to people who don't want the complication of trying to program and design a system around a controller.
It may also make some equipment more affordable to start. Someone will likely take the Keurig / Nesspresso road and sell devices cheap and make up the cost by selling you marked up refills.
I think this all hinges on some company being able to make a "recipe" that frequently produces long term success. Or at least figures out a fairly surefire set of steps for success.
If the only way to make a long term successful reef tank is with real live rock this won't happen, but I bet there is someone in a lab right now trying to figure out some sort of probiotic additives to get you into that mature tank state quicker.
I know this is a fairly contraversial idea, but I think in the end it will be good for the hobby (if someone can do it well). It will likely bring many new members to the hobby since it has the potential to reduce the up front cost and may help break our imagine of being one of the hardest and most time consuming hobbies.
Also the added structure to getting up and running along with the benefits of potentially more stable parameters will help people stick with the hobby and keep their slice of the ocean alive.