I think Maemo6 should have the X-Terminal out-of-the-box. keeping it hidden would remove the geekiness that I associate Nokia with when I see the N900. At the Summit, Jaaksi (VP Maemo), was upbeat about having the X-Terminal icon and shortcut "in case you want to show non-techies, whats so cool about linux"

If a non-techie, opens xterm, as is confused, nothing is lost. All users are smart enough to close an app they don't like or understand. The terminal opens up with regular user privileges anyways so the probability of a noob causing a catastrophe is insignificant. Better yet, the terminal might make a techie out of a noob.

The X-Terminal icon sets the N900 apart from other devices. I think Nokia should continue to showoff its geekiness with Maemo6 rather than being paranoid and try hard to hide it in the interest of 'end users'.