I'm the ECC in Denmark, known for its obsession with aesthetics and design, so it came as no surprise when users I work with asked 'why can't we have covers on notebooks?'
I think it's a pretty good point. The note Evernote chooses to represent the notebook 'cover' is useful but can look messy, depending on what it is.
Having a cover could be a great way to add personalisation. And if Evernote opened up the API to third parties you could get some great designers contributing.
Imagine the Nordic Range of book covers. Or the Covers Inspired By Nature. You get the idea.
Even if Evernote kept it all in-house, I think a range of covers would be neat.
Is this something that's complex to do?