Have been trialling Office2016 for a while now. Overall, doesn't seem like big changes but there's some (what I perceived to be basic) functionality I really miss:
- right click on outlook icon in the start bar and create new email/appointment etc
- selecting attachments (feeling your pains @coffeebaron) and saving/moving to a different email
- changes to how search worked - no longer using "" have to use ()
My major bugbear is how OneDrive for business syncs, it's been getting better, but it keeps eating storage!