[dTal]

>if this comes on, turn on everything

Eco-friendly or not, I'm impressed; detecting power draw and using that as a signal is actually a legitimately clever solution to the problem of wanting to conveniently switch multiple things at once. The only caveat I can think of is that some devices probably don't like being switched at the wall.

[mercutio2]

I've found these devices to be finicky. You have to set the threshold of current flow that matches your TV, and sometimes switching from one input device to another will spike power consumption low enough to turn things off in a way you don't want.

But it is a very cool idea.