I actually prefer English spines. But if I wanted English spine I have so many other options. One of the reasons why I'd ever grab any movie from Japan ( or any other Asian country) is because I expect the Japanese title. At least at the front. I can understand the spine in English, but the front too?
I know right? Unless you're from Japan, I don't see why anybody else would buy this. If they had Japanese title (in the front at least), I could see that attracting some collectors.