The Healer is just fine at healing, even without the obvious additions to its spell list. Since the Spell Compendium does tell you to add healing and restorative spells to its list, it shouldn't be much of an issue.

Even once you do that, though, you're left with a character who can't do much other than heal. That's fine for a lot of games, but the lack of offensive power can be a drag at times.

If you really just want a class to heal, though (and with a name like "Healer," there's not much else to expect), the Healer is your man. Also, it gets major coolness points for riding a Unicorn.