Then it will be really useful to have all my data locally too and running some sync software which will check status of my files and in case some file was deleted from all hosts it will inform me and I re upload file from my local disk.
This is not something we'll be able to make in the next 2 months, but perhaps we can do it in the future.
I understand that everything is not so easy. This is only from my "home user" point of view. Maybe describe real usage for end user would help to understand and see what is planed.
In case I know that I must have local copy and at least receive warning when my file is not in the cloud. Then it is better.
Or you are targeting complete different usage.