This is a great idea for conveniently testing out potentially dodgy executables, without having to fire up a full virtual machine.
Windows 10 is to get a new feature which will allow users to run potentially suspicious apps in a sandbox environment to protect their system from any possible malicious side-effects.
Windows Sandbox represents a convenient way to fire up a desktop environment which is completely isolated from the rest of your system, where you can run an executable which you’re concerned about without any fear of collateral damage.