* Marking as invalid in aptitude, aptitude technically does exactly what it is supposed to do.
* Marking as wontfix in edubuntu-desktop, removing a meta-package should not remove all its dependencies.
To remove artwork after installation, the best way to do so is to remove the relevant artwork packages (edubuntu-artwork, edubuntu-wallpapers, edubuntu-plymouth-theme, etc)
Thank you for your bug report, however;
* Marking as invalid in aptitude, aptitude technically does exactly what it is supposed to do.
* Marking as wontfix in edubuntu-desktop, removing a meta-package should not remove all its dependencies.
To remove artwork after installation, the best way to do so is to remove the relevant artwork packages (edubuntu-artwork, edubuntu- wallpapers, edubuntu- plymouth- theme, etc)