When I'm shooting tethered, I'm doing fine art reproduction or similar still life work. And I use EOS Utility to control the camera and send the resulting files to RawDigger, where I'm mainly checking for highlight clipping. The files then go through a convoluted process that you really don't want to know about, but includes linear developing and ICC profiling. Composition and lighting I do through the viewfinder; focus is with live view. If the camera's in too awkward a position to use directly, I'll do remote live view through the tether.
When I'm doing portraiture (which I don't do a lot of), I tend to take the same approach. I'll get the stage, including lighting and exposure and what-not, all set up the way I want it before the model steps onto it. Then I'll just focus my attention on posing, framing, and clicking the button, confident in knowing that everything else is the way it should be. If it were a scene where the camera could stay in its fixed position on the tripod, I'd get away from behind it and use a remote trigger; otherwise I'll have it up to my eye. If I were to use remote shooting, it'd only be to closely check focus and expressions and the like after I clicked the shutter...and the back-of-the-camera preview is almost as good for that sort of thing. But that kind of remote shooting means a hard-wired tether which seriously limits mobility.
Other than that sort of situation, I don't see much use for tethered shooting. (A big exception would be, for example, a camera mounted over the basket in a game, or that sort of thing.)
There have been a few times out in the wild where I've wanted to put the camera somewhere that I can't put my eye to...but I've quickly given up wishing for a remote live view in those situations because I also wouldn't be able to securely get the camera in place and adjusted.