First, I LOVE that evernote has implemented this. Only a few apps that I have used have even tried to consolidate tasks from notes (Paper, Amplenote) but each with their own issues. After a few weeks of use here is my feedback and wishlist in no particular order:
Recurring tasks
natural language processing in tasks
note headings in task sidebar has too much vertical spacing
tasks themselves in notes have too much vertical spacing
Would like the option to sort tasks/ hide completed within the note itself
I know some will be implemented and that is amazing. Can't wait for future improvements. I've paid for note apps, pm apps, todo apps, hybrids etc happy to pay for quality development.