well, if i have this on my shelf I see the spine. With nothing on it, I will not know what it is. While for very few edits this might wok, I like the little info as a title or at least an image on it.
as for the back:
I think the upper third is still too empty. Perhaps if you put the writing in the center and also maybe use centered type style.
and all the logos on the bottom are a bit too big IMO.