Remembering back to the good ol’ pre SpaceNavigator days, when Google Earth was stuck in ‘Earth Based’ mode, and I created ViewFrom, have created a new version that uses the <Camera> functionality to do it more accurately, but at the same wrapping it in a networklink for ease of use…
– ViewFlip (recent GE 4.2+ required)
… open opening this you should get an arrow in the middle of view. Click it and choose to either Flip! (swap position*) or Look Around (which gives you a folder of viewpoints to look out from the point of the arrow). So a sort of basic ‘User Based’ movements, which really (IMHO) should be part of part of the default GE installation – without needed addons.
*There is a few oddities with this – but mostly works. Also you will get a bunch of features in your Temporally Places – GE doesn’t seem to be able to load a KML that just changes the view (which there is no need to show in the Places there are no features)
Update: 25th Jan, Thanks to a suggestion from Frank Taylor the “lookaround” groups are now available at multiple altitudes, nothing new to download, its all done by magic. (let me know if other heights would be useful)