Can we have more folder options like custom folders or sub-folders to add to Computer Backup?

As others have said, the ability to select any local folder is the missing link in Dropbox being the 'Goto' online backup facility for Private and SME companies. We have a Folder on a network drive (thats on a Mirror server), which holds all our working documents. We have to manually back this up and then place it in a Dropbox folder at the moment. This would save a huge amount of risk and aggro if this could happen automaticaly by allowing us to choose a folder rather than being limited to those three defaults.