To be honest, I have already stopped filling out my Italian Collection due to the special features harking back to the dawn of DVD with an interactive menu and a choice of audio
My interest hasn't been caught up with these 4 films and I don't think there will be much in the way of features for any of them - I decided against backing as well. I'll probably pick up the Fulci and maybe Beyond the Darkness if the reviews are decent but I'm not holding my breath.