Feel free to switch to a better alternative if you know of one.
My use of SketchUp is luckily not dependent on the satellite imagery. For our part of the world, the Google images were already for the most part half-unusable, and the Digital Globe images are almost totally useless, with no 3D terrain available.
The existence of a good global solution would be welcome. I live in one of the Nordic countries where the local geographic survey data, both the digital terrain and the imagery, is freely available, but I don’t know of anyone to have taken it and packaged it for easy use of 3D modellers.