Todoist has a slack app integration, and it's helpful enough that I'm even thinking about switching so I can see, update and edit my todo list from Slack
Have a way to separate work and home completely into different workspaces with separate searches, filters, folders (a la Slack's different workspaces which can easily be toggled)
Implement an optional dark theme, making the website (and phone apps) more pleasant in dark environment.
For Alexa, ability to say "Alexa, add task "task". Need to be able to configure default values for Priority, Context, Folders, etc.
Google Assistant integration
For assistant, ability to say "OK Google, add task "task". Need to be able to configure default values for Priority, Context, Folders, etc.
When I have a long list of things to do, I find it very distracting. I'd like an alternate view in Toodledo where I can just see one task at a time, with the others grayed out or just plain gone while I work on that one. When I finish that one, show me another. Maybe have arrows so I can move through tasks at my top priority level till I pick one to work on.
Multiple Colors for Starred tasks
Allow a change in star color (green / yellow /orange) to prioritize in your day which starred task you should do first