Whether inadvertently upgrade over modules or core changes that are not upgrade-safe, many kinds of unfortunate accidents can occur at the worst time with Sugar.

This points out the need for a module - probably for the Admin panel - that can do a one-click full clone - or restore to bare LAMP/WAMP server - of the entire Sugar instance.

Everything. Data from the database, Sugar code files, Documents, Emails. Truly everything.

AJAX interface for continuous progress updates as it makes the backup file - a standard compressed ZIP or RAR file, which will be downloadable by the Admin, and can be uploaded (via FTP most likely) to a fresh LAMP server - and restored flawlessly, with a simple PHP script.