Another +1 for APIs for Tasks.
I'm using Akiflow to capture all my to-dos (including starred emails, slacks, Jira, Asana, or whatever app I need to use temporarily for work) — in one Inbox. The only major app I can't connect with Akiflow is Evernote due to a lack of APIs. And that's a huge problem for me as since 2009, it's been my main personal productivity workhorse.