Feature request?

I'm not sure where else to post this. Please move it elsewhere if it doesn't belong here.

@Koval, can you make a generate cover from existing files? There are instances where I update an epub, azw3, mobi, etc (which have new covers) and I want the new metadata to update the cover from the new file.

Also, can you add a "View" button in the "Edit Metadata" window. I guess this will be useful for when I add multiple files and want to see how they are before I commit the changes. Or rather, can you make clicking the View, Edit book, and any other buttons clickable with the "Edit Metadata" window open?

Thanks.