As a matter of fact, we do have plans to support that as part of a larger overall release in the future (though it is not something scheduled for the near term). Without going into too many details, the release includes the following core components:
-- Allowing admins to sign in as any user on the site
-- Supporting an Admin Event Log, which lists all admin actions performed on the site, as well as some other critical actions, like whenever content is deleted or edited.
-- Support for a Deleted Content Queue. With this queue, deleted content would not be permanently deleted immediately (as it is currently), and would support restoring deleted content within a certain window (like 30-60 days).
The Admin Event Log is a critical component of the "sign-in as user" feature because you would want to be able to track actions performed on behalf of a user by an admin. Similarly, the Deleted Content Queue is critical to the Admin Event Log so admins can restore mistakenly deleted content.
This is a fairly major overall release, as you can probably guess.
Thus, we can do this as a feature expedite but the price tag would be $15,000 and we would require 90 days to delivery the feature set. If interested, let us know.