The ability to force sync
It would be great to be able to force sync with a right click option within the OS. Also to have the files show that they are syncing. I have had an incredibly frustrating experience with the files at work not syncing with the files at home. One drive says its up to date but I know it's not. there's no proper progress bar. The files only appear once they are fully downloaded. I have a large PSD file at work, but no indication that is is syncing at home. Even online there's no indication that it is doing anything. Maybe look at how dropbox does things. while they aren't perfect, they handle this stuff much much better. I use Dropbox with another client and it just works.
Update while writing this: The PSD file now appears online (54m ago apparently) and its not syncing with my drive on my home computer.
If I had a sync now button then I could get my files quicker.
really really frustrating.