I am planning to use a wall mounted touchscreen LCD mounted on the wall next to the tank. On it will be a fullscreen interface, likely written in in VB (yeah, I'm old fashioned), that shows a "dashboard" of the tank's current status, probably in the form of a process monitor screen - showing the plumbing layout and the status of various pieces of equipment, pumps, heaters, etc.
Touching a part of the screen will allow you to access or change information. For example, I want to be able to touch the temperature reading and get a graph that shows historical temperature data over a configurable time period, and a portion that allows me to change the temperature.
I even plan to use powerheads and lighting tweaks to simulate storm conditions and calm conditions in the reef, depicted by "weather" icons on the screen. The moonlight brightness will be controlled to simulate lunar cycles, again depicted with moon icons to show what is going on at any given time.
And the whole thing will be able to be connected to from anywhere with an internet connection, so I can monitor and control from anywhere.
Of course this is nothing that existing controller products cannot do, this is more of a "because I can" project...