OneNote integration with SuiteCRM would be awesome to drive adoption.
OneNote is a fantastic tool for meeting notes and visit reports.
https://success.salesforce.com/ideaView?id=08730000000HIpb
Looks like its coming in Salesforce but if you can beet them to it I’m sure some users would jump ship!!
SalesAgility’s DNA is definitely not Microsoft-oriented.
Maybe you can get the idea in for the Outlook Plugin, but I wouldn’t be too sure.
These kinds of requests for integrations I believe are better served by the Community itself - some company that uses OneNote, invests in the integration and offers it to the Community.