For me, it would be more of a nice to have. I can create a project note in Evernote, and then add my related Todoist project within that note. This way I can keep all of my tasks in Todoist, but still keep track of them from Evernote within the specific note I have added the 'container.' One issue that comes to mind for this request, is that there are a ton of task management apps out there, and probably everyone is using something different.
I'm going to check out TaskClone, and see what that is about, it sounds interesting, thank you for sharing.