I am an Enterprise customer and also want our employees to be able to set a Default folder. The problem is actually due to privacy concerns.
As an Enterprise customer we have enterprise accounts for each of our employees. We have also instructed our employees to create a personal LastPass accounts and link it to their enterprise account. We want them to make secure passwords a daily practice in their professional and personal lives.
The problem is that when you are logged into your work account with your personal account linked, ANY new sites or Generated Passwords (which do not prompt for a folder) get saved into the default folder of the Enterprise Account. If this is a personal login site, then you have to move this item out of the Professional account default Folder into the preferred personal account folder, and this is where the privacy concern starts.
This issue with privacy concerns are if you are like us, in the Enterprise Corporate setup you can setup superuser accounts with the ability to view deleted items of the corporate users and also the ability to take over a separated corporate employee's account. Using this account,you also have the ability to recover deleted items and here is where the privacy concerns are.
When you move a site from the corporate account to a linked personal account the item being moved becomes a deleted item in the corporate account a recoverable by the superuser on that corporate account.
Their needs to be a way to prevent this from occurring by setting a default folder of the user's choosing.