OK, this started out as a proof of concept to see if it could actually be done and it worked out awesome. The screen below is not a mock up, but an actual fully functioning screen that updates as you change processes (or manually control outputs). You can also click on the objects in the custom screen to control the outputs.
I know this is going to be a tease just showing you the screen, but I promise I'll get it fully documented and provide the working sample for how you can do this yourself. I'm not a graphics wizard, so my screen is fairly simple, but I'm sure they'll be others here that can come up with some really cool stuff. Please note that this image simply represents how my system is layed out. With a little work, you'll be able to create a custom screen that mimics the layout of your own system. (note the temps show 0 because my rig is not plugged into the BCS at the moment).
Just so you know, Adam at ECC fully supports doing this. He actually is looking to build something like this into the BCS and hopefully by my putting this out here, it will spur some discussions on what people would like out of a custom graphic front end.
(Scroll to post #38 below to see the latest iteration of my touchscreen interface.)
The custom BCS home page is modeled to be a representation of my brewing system, but you'll be able to customize it to match your own system.