I had the same experience as you musca, the same package removed, I did say yes (I don't really know why, maybe because there have been issues before) to a new lightdm-gtk-greetr.config and lightdm.conf. That of cause made me have to change the later to the settings I normally have there.
The only small issue was that my wallpaper was little deformed, but the easy to change in the new desktop settings.