PDF Conversion for Microsoft 365 Subscribers -- Convert PDF within Word/Excel AND One Drive.
I've seen a few comments on this, but it seems like something that would be an incredible addition to the Microsoft Office suite of applications. Especially for the Office 365 Subscribers --- This would be an incredible perk to build into 365.
Additionally, an incredible benefit to Office 365 would be an extension in One Drive that allows for PDF export to Word, Excel, etc. That way you can do everything you need to do (as far as conversion) in one application, rather than having to go back and forth between 2/3 apps.
Simplicity in design.