I'd like to posit another direction regarding code block - that not all who use code are programmers!
I run a website, and as a solo-preneur, that means I need to find ways to code myself sometimes.
I use Evernote for everything related to my business - I blog/write in Evernote, I keep track of business receipts, I log all my marketing in Evernote. What I'd also like to do is keep track of snippets of code that I write for website themes, plugins, widgets, and CSS.
The "wider audience" might not be the programmers - it might be the thousands and thousands of women like me who are already using Evernote for their #sidehustle and want another reason to stay with Evernote and another reason to pitch Evernote at places like BlogHer. That isn't a small market-share.