Thank you for making a very good comment! One thing which we will probably inherit from ZODB is server-side versioning of all objects. E.g. if something gets c

Thank you for making a very good comment! One thing which we will probably inherit from ZODB is server-side versioning of all objects. E.g. if something gets corrupted, it's easy enough to roll back to a previous version. If the model is "each user has its very own private tree" applies (would be the case for gmail or evernote-like application), I think clients quite can maintain it (having the version history, of course). If it's groups of users having access to the same objects, we should have some maintenance clients.