Direct Access has many benefits over a traditional VPN. First, the connectivity is over HTTPS so it is not blocked at places that block other VPNs (some public libraries and free WiFi spots). Second the remote client is visible from the LAN, meaning WSUS can still update while the client is in the field, and tools such as Remote Desktop can run from the LAN to the remote client.
Unfortunately, Microsoft keeps all this goodness limited to Windows 10 Enterprise clients.
Dave Anderson