This would simply be outstanding. Maybe you are a macro shooter, or in my case, shooting a remote camera. I had to stand on a bucket to adjust my 7D/70-200 lens aimed at second base. This was so the remote would clear the fence and give me a clear shot. Having the abillity to see my image would not only help with my aim, but focus also. I use manual focus and live view would be great. Once focused, I tape the lens so the focus won't drift.
Same goes for remote mounted at ground level behind the soccer goal. Great news for us old guys with bad knees! Who needs a dang tilting screen! 
Examples of remote set up either high or low.
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