Integration with Microsoft To Do lists
Should be able to insrt To-do lists into One note pages. You should be able to insert existing To Do lists (with tasks, sub tasks, due dates, notes and other things) as a block so you can see the whole thing as part of a note in a page. Whatever you do in the note block gets updated in To-do and vice versa.
Would be even better if you can create a To Do list in a One Note page, and that list would be created in To Do as well automatically.
This would be a really useful feature to have when planning and organising things in One Note. Can post things to do while planning without leaving One Note and also can have a better view on things to do as a whole.