I'm not sure if it's already been asked, probably countless times even if I couldn't find any post about it in the forum

, about the book covers displayed in the home screen. They're standardized to look uniformly the same except for the overly-impressed title of the book and author - no trace of the book cover which would be a nicer way, not necessarily better, to display the description of the book.
What I've notice for PDFs only is that you can display the book author(s) by modifying the PDF properties with an authoring tool like Adobe Acrobat, while the book title for all the formats is simply the file name.
Also Kindle doesn't display DjVU, but you can us KOreader, which in turn won't display AZW3... I guess the Collection Manager is the only way to keep track of all the ebooks at once?
Sorry for the detour, back to the main issue. How can I display the book first page, usually the cover of the book, in the thumbnails presented in the home screen? Does anybody know a place to start to hack this down once and for all? I'd be willing to invest time to make it work for everyone.