Potential New "add-ins"

I would like to know if/when Outlook Mobile will get add-in for the following services:

 

Microsoft To Do - Trello has add-in, why doesn't To Do!!

 

OneNote - Evernote has add-in, why not OneNote, you need to pay for Newton Mail to convert email to OneNote, this is sad, Outlook 2016 has convert to OneNote

 

MS Planner - again Trello has add-in

 

I hope MS Outlook Team see this as proirity, if this is not on radar screen, would suggest adding to development path