[rmc]

Trying to get satellite and the map portions to line up is very difficult. Trying to do it on a global scale with data from multiple sources... you get the idea.

Not really. There are loads of different projection systems & coordinate system around the world, so all GIS software is able to deal with converting coordinates and reprojections etc.

Satellite & aerial imagery always has to be georectified and made 'location aware'. Once you've done that, it's trivial to reproject it to whatever system you want.